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Finding the Fourth Proportional to 61,647.12, 92,499.92 and 42,700.88

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Solution

The fourth proportional to 61,647.12, 92,499.92 and 42,700.88 is: 64,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,647.12 : 92,499.92 = 42,700.88 : x
  2. Step 2: Convert to fraction form
    61,647.12/92,499.92 = 42,700.88/x
  3. Step 3: Cross multiply
    61,647.12x = 92,499.92 × 42,700.88
  4. Step 4: Simplify right side
    61,647.12x = 3,949,827,307.93
  5. Step 5: Solve for x
    x = 3,949,827,307.93/61,647.12
  6. Step 6: Final answer
    x = 64,071.56

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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.