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Finding the Fourth Proportional to 249,998.43, 374,930.78 and 70,073.78

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Solution

The fourth proportional to 249,998.43, 374,930.78 and 70,073.78 is: 105,091.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,998.43 : 374,930.78 = 70,073.78 : x
  2. Step 2: Convert to fraction form
    249,998.43/374,930.78 = 70,073.78/x
  3. Step 3: Cross multiply
    249,998.43x = 374,930.78 × 70,073.78
  4. Step 4: Simplify right side
    249,998.43x = 26,272,814,767.93
  5. Step 5: Solve for x
    x = 26,272,814,767.93/249,998.43
  6. Step 6: Final answer
    x = 105,091.92

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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.