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Finding the Fourth Proportional to 516,900.76, 713,025.50 and 322,972.12

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Solution

The fourth proportional to 516,900.76, 713,025.50 and 322,972.12 is: 445,515.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,900.76 : 713,025.50 = 322,972.12 : x
  2. Step 2: Convert to fraction form
    516,900.76/713,025.50 = 322,972.12/x
  3. Step 3: Cross multiply
    516,900.76x = 713,025.50 × 322,972.12
  4. Step 4: Simplify right side
    516,900.76x = 230,287,357,349.06
  5. Step 5: Solve for x
    x = 230,287,357,349.06/516,900.76
  6. Step 6: Final answer
    x = 445,515.61

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Half scale
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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.