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Finding the Fourth Proportional to 521,456.46, 719,620.11 and 340,284.30

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Solution

The fourth proportional to 521,456.46, 719,620.11 and 340,284.30 is: 469,598.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,456.46 : 719,620.11 = 340,284.30 : x
  2. Step 2: Convert to fraction form
    521,456.46/719,620.11 = 340,284.30/x
  3. Step 3: Cross multiply
    521,456.46x = 719,620.11 × 340,284.30
  4. Step 4: Simplify right side
    521,456.46x = 244,875,425,397.27
  5. Step 5: Solve for x
    x = 244,875,425,397.27/521,456.46
  6. Step 6: Final answer
    x = 469,598.99

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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.