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Finding the Fourth Proportional to 84,884,807.20, 127,327,210.80 and 84,884,807.20

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Solution

The fourth proportional to 84,884,807.20, 127,327,210.80 and 84,884,807.20 is: 127,327,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,884,807.20 : 127,327,210.80 = 84,884,807.20 : x
  2. Step 2: Convert to fraction form
    84,884,807.20/127,327,210.80 = 84,884,807.20/x
  3. Step 3: Cross multiply
    84,884,807.20x = 127,327,210.80 × 84,884,807.20
  4. Step 4: Simplify right side
    84,884,807.20x = 10,808,145,740,071,758
  5. Step 5: Solve for x
    x = 10,808,145,740,071,758/84,884,807.20
  6. Step 6: Final answer
    x = 127,327,210.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.