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Finding the Fourth Proportional to 42,408.72, 63,613.08 and 14,706.72

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Solution

The fourth proportional to 42,408.72, 63,613.08 and 14,706.72 is: 22,060.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,408.72 : 63,613.08 = 14,706.72 : x
  2. Step 2: Convert to fraction form
    42,408.72/63,613.08 = 14,706.72/x
  3. Step 3: Cross multiply
    42,408.72x = 63,613.08 × 14,706.72
  4. Step 4: Simplify right side
    42,408.72x = 935,539,755.90
  5. Step 5: Solve for x
    x = 935,539,755.90/42,408.72
  6. Step 6: Final answer
    x = 22,060.08

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1.5x scale

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.