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Finding the Fourth Proportional to 61,285.52, 84,581.91 and 34,428.02

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Solution

The fourth proportional to 61,285.52, 84,581.91 and 34,428.02 is: 47,515.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,285.52 : 84,581.91 = 34,428.02 : x
  2. Step 2: Convert to fraction form
    61,285.52/84,581.91 = 34,428.02/x
  3. Step 3: Cross multiply
    61,285.52x = 84,581.91 × 34,428.02
  4. Step 4: Simplify right side
    61,285.52x = 2,911,987,689.12
  5. Step 5: Solve for x
    x = 2,911,987,689.12/61,285.52
  6. Step 6: Final answer
    x = 47,515.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.