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Finding the Fourth Proportional to 265,517.79, 398,190.55 and 87,977.13

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Solution

The fourth proportional to 265,517.79, 398,190.55 and 87,977.13 is: 131,937.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,517.79 : 398,190.55 = 87,977.13 : x
  2. Step 2: Convert to fraction form
    265,517.79/398,190.55 = 87,977.13/x
  3. Step 3: Cross multiply
    265,517.79x = 398,190.55 × 87,977.13
  4. Step 4: Simplify right side
    265,517.79x = 35,031,661,782.12
  5. Step 5: Solve for x
    x = 35,031,661,782.12/265,517.79
  6. Step 6: Final answer
    x = 131,937.15

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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.