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Finding the Fourth Proportional to 60,707.80, 91,061.70 and 39,712.60

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Solution

The fourth proportional to 60,707.80, 91,061.70 and 39,712.60 is: 59,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,707.80 : 91,061.70 = 39,712.60 : x
  2. Step 2: Convert to fraction form
    60,707.80/91,061.70 = 39,712.60/x
  3. Step 3: Cross multiply
    60,707.80x = 91,061.70 × 39,712.60
  4. Step 4: Simplify right side
    60,707.80x = 3,616,296,867.42
  5. Step 5: Solve for x
    x = 3,616,296,867.42/60,707.80
  6. Step 6: Final answer
    x = 59,568.90

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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.