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Finding the Fourth Proportional to 497,152.20, 745,728.30 and 217,216.20

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Solution

The fourth proportional to 497,152.20, 745,728.30 and 217,216.20 is: 325,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,152.20 : 745,728.30 = 217,216.20 : x
  2. Step 2: Convert to fraction form
    497,152.20/745,728.30 = 217,216.20/x
  3. Step 3: Cross multiply
    497,152.20x = 745,728.30 × 217,216.20
  4. Step 4: Simplify right side
    497,152.20x = 161,984,267,558.46
  5. Step 5: Solve for x
    x = 161,984,267,558.46/497,152.20
  6. Step 6: Final answer
    x = 325,824.30

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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.