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Finding the Fourth Proportional to 105,658.92, 145,790.82 and 60,316.20

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Solution

The fourth proportional to 105,658.92, 145,790.82 and 60,316.20 is: 83,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,658.92 : 145,790.82 = 60,316.20 : x
  2. Step 2: Convert to fraction form
    105,658.92/145,790.82 = 60,316.20/x
  3. Step 3: Cross multiply
    105,658.92x = 145,790.82 × 60,316.20
  4. Step 4: Simplify right side
    105,658.92x = 8,793,548,257.28
  5. Step 5: Solve for x
    x = 8,793,548,257.28/105,658.92
  6. Step 6: Final answer
    x = 83,225.80

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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.