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Finding the Fourth Proportional to 457,334.70, 686,002.05 and 124,910.70

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Solution

The fourth proportional to 457,334.70, 686,002.05 and 124,910.70 is: 187,366.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,334.70 : 686,002.05 = 124,910.70 : x
  2. Step 2: Convert to fraction form
    457,334.70/686,002.05 = 124,910.70/x
  3. Step 3: Cross multiply
    457,334.70x = 686,002.05 × 124,910.70
  4. Step 4: Simplify right side
    457,334.70x = 85,688,996,266.94
  5. Step 5: Solve for x
    x = 85,688,996,266.94/457,334.70
  6. Step 6: Final answer
    x = 187,366.05

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Similar ratio
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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.