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Finding the Fourth Proportional to 704,129.48, 971,698.90 and 381,839.48

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Solution

The fourth proportional to 704,129.48, 971,698.90 and 381,839.48 is: 526,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,129.48 : 971,698.90 = 381,839.48 : x
  2. Step 2: Convert to fraction form
    704,129.48/971,698.90 = 381,839.48/x
  3. Step 3: Cross multiply
    704,129.48x = 971,698.90 × 381,839.48
  4. Step 4: Simplify right side
    704,129.48x = 371,033,002,692.57
  5. Step 5: Solve for x
    x = 371,033,002,692.57/704,129.48
  6. Step 6: Final answer
    x = 526,938.60

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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.