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Finding the Fourth Proportional to 521,443.75, 719,592.39 and 282,979.75

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Solution

The fourth proportional to 521,443.75, 719,592.39 and 282,979.75 is: 390,512.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,443.75 : 719,592.39 = 282,979.75 : x
  2. Step 2: Convert to fraction form
    521,443.75/719,592.39 = 282,979.75/x
  3. Step 3: Cross multiply
    521,443.75x = 719,592.39 × 282,979.75
  4. Step 4: Simplify right side
    521,443.75x = 203,630,074,624.10
  5. Step 5: Solve for x
    x = 203,630,074,624.10/521,443.75
  6. Step 6: Final answer
    x = 390,512.06

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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.