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Finding the Fourth Proportional to 242,823.98, 363,549.11 and 128,711.78

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Solution

The fourth proportional to 242,823.98, 363,549.11 and 128,711.78 is: 192,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,823.98 : 363,549.11 = 128,711.78 : x
  2. Step 2: Convert to fraction form
    242,823.98/363,549.11 = 128,711.78/x
  3. Step 3: Cross multiply
    242,823.98x = 363,549.11 × 128,711.78
  4. Step 4: Simplify right side
    242,823.98x = 46,793,054,736.49
  5. Step 5: Solve for x
    x = 46,793,054,736.49/242,823.98
  6. Step 6: Final answer
    x = 192,703.60

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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.