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Finding the Fourth Proportional to 661,000.96, 912,186.88 and 359,194.88

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Solution

The fourth proportional to 661,000.96, 912,186.88 and 359,194.88 is: 495,691.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,000.96 : 912,186.88 = 359,194.88 : x
  2. Step 2: Convert to fraction form
    661,000.96/912,186.88 = 359,194.88/x
  3. Step 3: Cross multiply
    661,000.96x = 912,186.88 × 359,194.88
  4. Step 4: Simplify right side
    661,000.96x = 327,652,856,899.17
  5. Step 5: Solve for x
    x = 327,652,856,899.17/661,000.96
  6. Step 6: Final answer
    x = 495,691.95

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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.