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Finding the Fourth Proportional to 509,099.11, 763,648.04 and 130,020.17

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Solution

The fourth proportional to 509,099.11, 763,648.04 and 130,020.17 is: 195,030.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,099.11 : 763,648.04 = 130,020.17 : x
  2. Step 2: Convert to fraction form
    509,099.11/763,648.04 = 130,020.17/x
  3. Step 3: Cross multiply
    509,099.11x = 763,648.04 × 130,020.17
  4. Step 4: Simplify right side
    509,099.11x = 99,289,644,487.78
  5. Step 5: Solve for x
    x = 99,289,644,487.78/509,099.11
  6. Step 6: Final answer
    x = 195,030.09

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Double scale
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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.