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Finding the Fourth Proportional to 610,543.20, 915,814.80 and 167,311.20

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Solution

The fourth proportional to 610,543.20, 915,814.80 and 167,311.20 is: 250,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,543.20 : 915,814.80 = 167,311.20 : x
  2. Step 2: Convert to fraction form
    610,543.20/915,814.80 = 167,311.20/x
  3. Step 3: Cross multiply
    610,543.20x = 915,814.80 × 167,311.20
  4. Step 4: Simplify right side
    610,543.20x = 153,226,073,165.76
  5. Step 5: Solve for x
    x = 153,226,073,165.76/610,543.20
  6. Step 6: Final answer
    x = 250,966.80

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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.