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Finding the Fourth Proportional to 72,702.46, 109,085.55 and 35,291.26

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Solution

The fourth proportional to 72,702.46, 109,085.55 and 35,291.26 is: 52,952.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,702.46 : 109,085.55 = 35,291.26 : x
  2. Step 2: Convert to fraction form
    72,702.46/109,085.55 = 35,291.26/x
  3. Step 3: Cross multiply
    72,702.46x = 109,085.55 × 35,291.26
  4. Step 4: Simplify right side
    72,702.46x = 3,849,766,507.29
  5. Step 5: Solve for x
    x = 3,849,766,507.29/72,702.46
  6. Step 6: Final answer
    x = 52,952.36

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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.