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Finding the Fourth Proportional to 282,081.80, 423,219.90 and 124,423.40

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Solution

The fourth proportional to 282,081.80, 423,219.90 and 124,423.40 is: 186,677.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,081.80 : 423,219.90 = 124,423.40 : x
  2. Step 2: Convert to fraction form
    282,081.80/423,219.90 = 124,423.40/x
  3. Step 3: Cross multiply
    282,081.80x = 423,219.90 × 124,423.40
  4. Step 4: Simplify right side
    282,081.80x = 52,658,458,905.66
  5. Step 5: Solve for x
    x = 52,658,458,905.66/282,081.80
  6. Step 6: Final answer
    x = 186,677.97

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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.