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Finding the Fourth Proportional to 521,103.36, 719,122.32 and 282,639.36

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Solution

The fourth proportional to 521,103.36, 719,122.32 and 282,639.36 is: 390,042.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,103.36 : 719,122.32 = 282,639.36 : x
  2. Step 2: Convert to fraction form
    521,103.36/719,122.32 = 282,639.36/x
  3. Step 3: Cross multiply
    521,103.36x = 719,122.32 × 282,639.36
  4. Step 4: Simplify right side
    521,103.36x = 203,252,272,286.52
  5. Step 5: Solve for x
    x = 203,252,272,286.52/521,103.36
  6. Step 6: Final answer
    x = 390,042.14

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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.