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Finding the Fourth Proportional to 61,781.99, 91,878.19 and 59,813.69

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Solution

The fourth proportional to 61,781.99, 91,878.19 and 59,813.69 is: 88,951.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,781.99 : 91,878.19 = 59,813.69 : x
  2. Step 2: Convert to fraction form
    61,781.99/91,878.19 = 59,813.69/x
  3. Step 3: Cross multiply
    61,781.99x = 91,878.19 × 59,813.69
  4. Step 4: Simplify right side
    61,781.99x = 5,495,573,574.42
  5. Step 5: Solve for x
    x = 5,495,573,574.42/61,781.99
  6. Step 6: Final answer
    x = 88,951.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.