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Finding the Fourth Proportional to 610,299.61, 915,601.62 and 430,735.78

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Solution

The fourth proportional to 610,299.61, 915,601.62 and 430,735.78 is: 646,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,299.61 : 915,601.62 = 430,735.78 : x
  2. Step 2: Convert to fraction form
    610,299.61/915,601.62 = 430,735.78/x
  3. Step 3: Cross multiply
    610,299.61x = 915,601.62 × 430,735.78
  4. Step 4: Simplify right side
    610,299.61x = 394,382,377,959.96
  5. Step 5: Solve for x
    x = 394,382,377,959.96/610,299.61
  6. Step 6: Final answer
    x = 646,211.09

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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.