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Finding the Fourth Proportional to 61,752.58, 85,171.53 and 53,153.39

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Solution

The fourth proportional to 61,752.58, 85,171.53 and 53,153.39 is: 73,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,752.58 : 85,171.53 = 53,153.39 : x
  2. Step 2: Convert to fraction form
    61,752.58/85,171.53 = 53,153.39/x
  3. Step 3: Cross multiply
    61,752.58x = 85,171.53 × 53,153.39
  4. Step 4: Simplify right side
    61,752.58x = 4,527,155,275.21
  5. Step 5: Solve for x
    x = 4,527,155,275.21/61,752.58
  6. Step 6: Final answer
    x = 73,311.20

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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.