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Finding the Fourth Proportional to 12,596,428.80, 17,685,388.80 and 12,596,428.80

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Solution

The fourth proportional to 12,596,428.80, 17,685,388.80 and 12,596,428.80 is: 17,685,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,596,428.80 : 17,685,388.80 = 12,596,428.80 : x
  2. Step 2: Convert to fraction form
    12,596,428.80/17,685,388.80 = 12,596,428.80/x
  3. Step 3: Cross multiply
    12,596,428.80x = 17,685,388.80 × 12,596,428.80
  4. Step 4: Simplify right side
    12,596,428.80x = 222,772,740,819,517.47
  5. Step 5: Solve for x
    x = 222,772,740,819,517.47/12,596,428.80
  6. Step 6: Final answer
    x = 17,685,388.80

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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.