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Finding the Fourth Proportional to 519,816.76, 717,349.28 and 281,352.76

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Solution

The fourth proportional to 519,816.76, 717,349.28 and 281,352.76 is: 388,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,816.76 : 717,349.28 = 281,352.76 : x
  2. Step 2: Convert to fraction form
    519,816.76/717,349.28 = 281,352.76/x
  3. Step 3: Cross multiply
    519,816.76x = 717,349.28 × 281,352.76
  4. Step 4: Simplify right side
    519,816.76x = 201,828,199,812.01
  5. Step 5: Solve for x
    x = 201,828,199,812.01/519,816.76
  6. Step 6: Final answer
    x = 388,267.97

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.