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Finding the Fourth Proportional to 61,151.90, 84,353.82 and 38,454.98

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Solution

The fourth proportional to 61,151.90, 84,353.82 and 38,454.98 is: 53,045.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,151.90 : 84,353.82 = 38,454.98 : x
  2. Step 2: Convert to fraction form
    61,151.90/84,353.82 = 38,454.98/x
  3. Step 3: Cross multiply
    61,151.90x = 84,353.82 × 38,454.98
  4. Step 4: Simplify right side
    61,151.90x = 3,243,824,461.02
  5. Step 5: Solve for x
    x = 3,243,824,461.02/61,151.90
  6. Step 6: Final answer
    x = 53,045.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.