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Finding the Fourth Proportional to 521,881.38, 719,700.39 and 340,535.34

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Solution

The fourth proportional to 521,881.38, 719,700.39 and 340,535.34 is: 469,615.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,881.38 : 719,700.39 = 340,535.34 : x
  2. Step 2: Convert to fraction form
    521,881.38/719,700.39 = 340,535.34/x
  3. Step 3: Cross multiply
    521,881.38x = 719,700.39 × 340,535.34
  4. Step 4: Simplify right side
    521,881.38x = 245,083,417,006.78
  5. Step 5: Solve for x
    x = 245,083,417,006.78/521,881.38
  6. Step 6: Final answer
    x = 469,615.18

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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.