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Finding the Fourth Proportional to 56,462.74, 84,702.15 and 18,503.88

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Solution

The fourth proportional to 56,462.74, 84,702.15 and 18,503.88 is: 27,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,462.74 : 84,702.15 = 18,503.88 : x
  2. Step 2: Convert to fraction form
    56,462.74/84,702.15 = 18,503.88/x
  3. Step 3: Cross multiply
    56,462.74x = 84,702.15 × 18,503.88
  4. Step 4: Simplify right side
    56,462.74x = 1,567,318,419.34
  5. Step 5: Solve for x
    x = 1,567,318,419.34/56,462.74
  6. Step 6: Final answer
    x = 27,758.45

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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.