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Finding the Fourth Proportional to 40,746.70, 61,145.70 and 17,372.80

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Solution

The fourth proportional to 40,746.70, 61,145.70 and 17,372.80 is: 26,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,746.70 : 61,145.70 = 17,372.80 : x
  2. Step 2: Convert to fraction form
    40,746.70/61,145.70 = 17,372.80/x
  3. Step 3: Cross multiply
    40,746.70x = 61,145.70 × 17,372.80
  4. Step 4: Simplify right side
    40,746.70x = 1,062,272,016.96
  5. Step 5: Solve for x
    x = 1,062,272,016.96/40,746.70
  6. Step 6: Final answer
    x = 26,070.14

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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.