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Finding the Fourth Proportional to 91,862.93, 126,784.70 and 56,073.69

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Solution

The fourth proportional to 91,862.93, 126,784.70 and 56,073.69 is: 77,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,862.93 : 126,784.70 = 56,073.69 : x
  2. Step 2: Convert to fraction form
    91,862.93/126,784.70 = 56,073.69/x
  3. Step 3: Cross multiply
    91,862.93x = 126,784.70 × 56,073.69
  4. Step 4: Simplify right side
    91,862.93x = 7,109,285,684.17
  5. Step 5: Solve for x
    x = 7,109,285,684.17/91,862.93
  6. Step 6: Final answer
    x = 77,390.15

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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.