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Finding the Fourth Proportional to 281,178.59, 388,026.41 and 153,854.15

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Solution

The fourth proportional to 281,178.59, 388,026.41 and 153,854.15 is: 212,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,178.59 : 388,026.41 = 153,854.15 : x
  2. Step 2: Convert to fraction form
    281,178.59/388,026.41 = 153,854.15/x
  3. Step 3: Cross multiply
    281,178.59x = 388,026.41 × 153,854.15
  4. Step 4: Simplify right side
    281,178.59x = 59,699,470,778.70
  5. Step 5: Solve for x
    x = 59,699,470,778.70/281,178.59
  6. Step 6: Final answer
    x = 212,318.70

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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.