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Finding the Fourth Proportional to 624,064.64, 861,213.40 and 382,347.68

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Solution

The fourth proportional to 624,064.64, 861,213.40 and 382,347.68 is: 527,642.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,064.64 : 861,213.40 = 382,347.68 : x
  2. Step 2: Convert to fraction form
    624,064.64/861,213.40 = 382,347.68/x
  3. Step 3: Cross multiply
    624,064.64x = 861,213.40 × 382,347.68
  4. Step 4: Simplify right side
    624,064.64x = 329,282,945,474.91
  5. Step 5: Solve for x
    x = 329,282,945,474.91/624,064.64
  6. Step 6: Final answer
    x = 527,642.37

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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.