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Finding the Fourth Proportional to 82,707.80, 124,061.70 and 60,416.60

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Solution

The fourth proportional to 82,707.80, 124,061.70 and 60,416.60 is: 90,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,707.80 : 124,061.70 = 60,416.60 : x
  2. Step 2: Convert to fraction form
    82,707.80/124,061.70 = 60,416.60/x
  3. Step 3: Cross multiply
    82,707.80x = 124,061.70 × 60,416.60
  4. Step 4: Simplify right side
    82,707.80x = 7,495,386,104.22
  5. Step 5: Solve for x
    x = 7,495,386,104.22/82,707.80
  6. Step 6: Final answer
    x = 90,624.90

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1.5x scale

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.