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Finding the Fourth Proportional to 506,429.20, 759,643.80 and 132,452.20

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Solution

The fourth proportional to 506,429.20, 759,643.80 and 132,452.20 is: 198,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,429.20 : 759,643.80 = 132,452.20 : x
  2. Step 2: Convert to fraction form
    506,429.20/759,643.80 = 132,452.20/x
  3. Step 3: Cross multiply
    506,429.20x = 759,643.80 × 132,452.20
  4. Step 4: Simplify right side
    506,429.20x = 100,616,492,526.36
  5. Step 5: Solve for x
    x = 100,616,492,526.36/506,429.20
  6. Step 6: Final answer
    x = 198,678.30

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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.