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Finding the Fourth Proportional to 85,937.68, 118,615.80 and 58,724.78

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Solution

The fourth proportional to 85,937.68, 118,615.80 and 58,724.78 is: 81,055.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,937.68 : 118,615.80 = 58,724.78 : x
  2. Step 2: Convert to fraction form
    85,937.68/118,615.80 = 58,724.78/x
  3. Step 3: Cross multiply
    85,937.68x = 118,615.80 × 58,724.78
  4. Step 4: Simplify right side
    85,937.68x = 6,965,686,702.29
  5. Step 5: Solve for x
    x = 6,965,686,702.29/85,937.68
  6. Step 6: Final answer
    x = 81,055.09

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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.