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Finding the Fourth Proportional to 341,444.30, 512,166.45 and 128,211.80

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Solution

The fourth proportional to 341,444.30, 512,166.45 and 128,211.80 is: 192,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,444.30 : 512,166.45 = 128,211.80 : x
  2. Step 2: Convert to fraction form
    341,444.30/512,166.45 = 128,211.80/x
  3. Step 3: Cross multiply
    341,444.30x = 512,166.45 × 128,211.80
  4. Step 4: Simplify right side
    341,444.30x = 65,665,782,454.11
  5. Step 5: Solve for x
    x = 65,665,782,454.11/341,444.30
  6. Step 6: Final answer
    x = 192,317.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.