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Finding the Fourth Proportional to 65,988,641.20, 99,018,391.20 and 27,654,030.40

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Solution

The fourth proportional to 65,988,641.20, 99,018,391.20 and 27,654,030.40 is: 41,495,893.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,988,641.20 : 99,018,391.20 = 27,654,030.40 : x
  2. Step 2: Convert to fraction form
    65,988,641.20/99,018,391.20 = 27,654,030.40/x
  3. Step 3: Cross multiply
    65,988,641.20x = 99,018,391.20 × 27,654,030.40
  4. Step 4: Simplify right side
    65,988,641.20x = 2,738,257,600,403,892.50
  5. Step 5: Solve for x
    x = 2,738,257,600,403,892.50/65,988,641.20
  6. Step 6: Final answer
    x = 41,495,893.09

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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.