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Finding the Fourth Proportional to 84,783,301.20, 127,174,951.80 and 20,957,893.20

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Solution

The fourth proportional to 84,783,301.20, 127,174,951.80 and 20,957,893.20 is: 31,436,839.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,783,301.20 : 127,174,951.80 = 20,957,893.20 : x
  2. Step 2: Convert to fraction form
    84,783,301.20/127,174,951.80 = 20,957,893.20/x
  3. Step 3: Cross multiply
    84,783,301.20x = 127,174,951.80 × 20,957,893.20
  4. Step 4: Simplify right side
    84,783,301.20x = 2,665,319,057,539,547.50
  5. Step 5: Solve for x
    x = 2,665,319,057,539,547.50/84,783,301.20
  6. Step 6: Final answer
    x = 31,436,839.80

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1.5x scale

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.