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Finding the Fourth Proportional to 624,644.34, 862,011.17 and 338,165.57

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Solution

The fourth proportional to 624,644.34, 862,011.17 and 338,165.57 is: 466,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,644.34 : 862,011.17 = 338,165.57 : x
  2. Step 2: Convert to fraction form
    624,644.34/862,011.17 = 338,165.57/x
  3. Step 3: Cross multiply
    624,644.34x = 862,011.17 × 338,165.57
  4. Step 4: Simplify right side
    624,644.34x = 291,502,492,648.53
  5. Step 5: Solve for x
    x = 291,502,492,648.53/624,644.34
  6. Step 6: Final answer
    x = 466,669.55

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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.