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Finding the Fourth Proportional to 61,809.53, 93,177.56 and 57,689.90

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Solution

The fourth proportional to 61,809.53, 93,177.56 and 57,689.90 is: 86,967.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,809.53 : 93,177.56 = 57,689.90 : x
  2. Step 2: Convert to fraction form
    61,809.53/93,177.56 = 57,689.90/x
  3. Step 3: Cross multiply
    61,809.53x = 93,177.56 × 57,689.90
  4. Step 4: Simplify right side
    61,809.53x = 5,375,403,364.31
  5. Step 5: Solve for x
    x = 5,375,403,364.31/61,809.53
  6. Step 6: Final answer
    x = 86,967.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.