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Finding the Fourth Proportional to 7,123,969,807.60, 9,953,173,413.20 and 7,123,969,807.60

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Solution

The fourth proportional to 7,123,969,807.60, 9,953,173,413.20 and 7,123,969,807.60 is: 9,953,173,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123,969,807.60 : 9,953,173,413.20 = 7,123,969,807.60 : x
  2. Step 2: Convert to fraction form
    7,123,969,807.60/9,953,173,413.20 = 7,123,969,807.60/x
  3. Step 3: Cross multiply
    7,123,969,807.60x = 9,953,173,413.20 × 7,123,969,807.60
  4. Step 4: Simplify right side
    7,123,969,807.60x = 70,906,106,885,443,846,144
  5. Step 5: Solve for x
    x = 70,906,106,885,443,846,144/7,123,969,807.60
  6. Step 6: Final answer
    x = 9,953,173,413.20

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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.