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Finding the Fourth Proportional to 261,694.80, 392,542.20 and 173,048.40

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Solution

The fourth proportional to 261,694.80, 392,542.20 and 173,048.40 is: 259,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,694.80 : 392,542.20 = 173,048.40 : x
  2. Step 2: Convert to fraction form
    261,694.80/392,542.20 = 173,048.40/x
  3. Step 3: Cross multiply
    261,694.80x = 392,542.20 × 173,048.40
  4. Step 4: Simplify right side
    261,694.80x = 67,928,799,642.48
  5. Step 5: Solve for x
    x = 67,928,799,642.48/261,694.80
  6. Step 6: Final answer
    x = 259,572.60

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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.