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Finding the Fourth Proportional to 103,691.80, 155,148.90 and 94,360.60

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Solution

The fourth proportional to 103,691.80, 155,148.90 and 94,360.60 is: 141,187.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,691.80 : 155,148.90 = 94,360.60 : x
  2. Step 2: Convert to fraction form
    103,691.80/155,148.90 = 94,360.60/x
  3. Step 3: Cross multiply
    103,691.80x = 155,148.90 × 94,360.60
  4. Step 4: Simplify right side
    103,691.80x = 14,639,943,293.34
  5. Step 5: Solve for x
    x = 14,639,943,293.34/103,691.80
  6. Step 6: Final answer
    x = 141,187.09

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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.