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Finding the Fourth Proportional to 61,437.61, 84,766.93 and 34,578.55

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Solution

The fourth proportional to 61,437.61, 84,766.93 and 34,578.55 is: 47,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,437.61 : 84,766.93 = 34,578.55 : x
  2. Step 2: Convert to fraction form
    61,437.61/84,766.93 = 34,578.55/x
  3. Step 3: Cross multiply
    61,437.61x = 84,766.93 × 34,578.55
  4. Step 4: Simplify right side
    61,437.61x = 2,931,117,527.35
  5. Step 5: Solve for x
    x = 2,931,117,527.35/61,437.61
  6. Step 6: Final answer
    x = 47,708.85

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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.