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Finding the Fourth Proportional to 12,521,569,413.60, 17,555,996,080.80 and 12,521,569,413.60

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Solution

The fourth proportional to 12,521,569,413.60, 17,555,996,080.80 and 12,521,569,413.60 is: 17,555,996,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521,569,413.60 : 17,555,996,080.80 = 12,521,569,413.60 : x
  2. Step 2: Convert to fraction form
    12,521,569,413.60/17,555,996,080.80 = 12,521,569,413.60/x
  3. Step 3: Cross multiply
    12,521,569,413.60x = 17,555,996,080.80 × 12,521,569,413.60
  4. Step 4: Simplify right side
    12,521,569,413.60x = 219,828,623,550,626,758,656
  5. Step 5: Solve for x
    x = 219,828,623,550,626,758,656/12,521,569,413.60
  6. Step 6: Final answer
    x = 17,555,996,080.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.