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Finding the Fourth Proportional to 503,012.10, 754,518.15 and 129,035.10

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Solution

The fourth proportional to 503,012.10, 754,518.15 and 129,035.10 is: 193,552.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,012.10 : 754,518.15 = 129,035.10 : x
  2. Step 2: Convert to fraction form
    503,012.10/754,518.15 = 129,035.10/x
  3. Step 3: Cross multiply
    503,012.10x = 754,518.15 × 129,035.10
  4. Step 4: Simplify right side
    503,012.10x = 97,359,324,937.07
  5. Step 5: Solve for x
    x = 97,359,324,937.07/503,012.10
  6. Step 6: Final answer
    x = 193,552.65

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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.