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Finding the Fourth Proportional to 249,878.50, 374,856.72 and 81,359.04

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Solution

The fourth proportional to 249,878.50, 374,856.72 and 81,359.04 is: 122,051.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,878.50 : 374,856.72 = 81,359.04 : x
  2. Step 2: Convert to fraction form
    249,878.50/374,856.72 = 81,359.04/x
  3. Step 3: Cross multiply
    249,878.50x = 374,856.72 × 81,359.04
  4. Step 4: Simplify right side
    249,878.50x = 30,497,982,876.75
  5. Step 5: Solve for x
    x = 30,497,982,876.75/249,878.50
  6. Step 6: Final answer
    x = 122,051.25

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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.