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Finding the Fourth Proportional to 625,077.32, 862,431.70 and 392,529.33

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Solution

The fourth proportional to 625,077.32, 862,431.70 and 392,529.33 is: 541,580.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,077.32 : 862,431.70 = 392,529.33 : x
  2. Step 2: Convert to fraction form
    625,077.32/862,431.70 = 392,529.33/x
  3. Step 3: Cross multiply
    625,077.32x = 862,431.70 × 392,529.33
  4. Step 4: Simplify right side
    625,077.32x = 338,529,735,409.11
  5. Step 5: Solve for x
    x = 338,529,735,409.11/625,077.32
  6. Step 6: Final answer
    x = 541,580.58

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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.