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Finding the Fourth Proportional to 610,423.70, 915,635.55 and 492,325.70

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Solution

The fourth proportional to 610,423.70, 915,635.55 and 492,325.70 is: 738,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,423.70 : 915,635.55 = 492,325.70 : x
  2. Step 2: Convert to fraction form
    610,423.70/915,635.55 = 492,325.70/x
  3. Step 3: Cross multiply
    610,423.70x = 915,635.55 × 492,325.70
  4. Step 4: Simplify right side
    610,423.70x = 450,790,913,098.64
  5. Step 5: Solve for x
    x = 450,790,913,098.64/610,423.70
  6. Step 6: Final answer
    x = 738,488.55

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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.