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Finding the Fourth Proportional to 249,305.65, 373,959.79 and 71,816.90

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Solution

The fourth proportional to 249,305.65, 373,959.79 and 71,816.90 is: 107,725.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,305.65 : 373,959.79 = 71,816.90 : x
  2. Step 2: Convert to fraction form
    249,305.65/373,959.79 = 71,816.90/x
  3. Step 3: Cross multiply
    249,305.65x = 373,959.79 × 71,816.90
  4. Step 4: Simplify right side
    249,305.65x = 26,856,630,793.11
  5. Step 5: Solve for x
    x = 26,856,630,793.11/249,305.65
  6. Step 6: Final answer
    x = 107,725.72

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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.