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Finding the Fourth Proportional to 624,555.38, 861,885.72 and 338,075.39

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Solution

The fourth proportional to 624,555.38, 861,885.72 and 338,075.39 is: 466,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,555.38 : 861,885.72 = 338,075.39 : x
  2. Step 2: Convert to fraction form
    624,555.38/861,885.72 = 338,075.39/x
  3. Step 3: Cross multiply
    624,555.38x = 861,885.72 × 338,075.39
  4. Step 4: Simplify right side
    624,555.38x = 291,382,353,079.15
  5. Step 5: Solve for x
    x = 291,382,353,079.15/624,555.38
  6. Step 6: Final answer
    x = 466,543.66

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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.