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Finding the Fourth Proportional to 526,476.70, 789,715.05 and 414,502.30

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Solution

The fourth proportional to 526,476.70, 789,715.05 and 414,502.30 is: 621,753.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,476.70 : 789,715.05 = 414,502.30 : x
  2. Step 2: Convert to fraction form
    526,476.70/789,715.05 = 414,502.30/x
  3. Step 3: Cross multiply
    526,476.70x = 789,715.05 × 414,502.30
  4. Step 4: Simplify right side
    526,476.70x = 327,338,704,569.62
  5. Step 5: Solve for x
    x = 327,338,704,569.62/526,476.70
  6. Step 6: Final answer
    x = 621,753.45

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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.