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Finding the Fourth Proportional to 249,657.85, 374,489.51 and 72,166.40

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Solution

The fourth proportional to 249,657.85, 374,489.51 and 72,166.40 is: 108,250.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,657.85 : 374,489.51 = 72,166.40 : x
  2. Step 2: Convert to fraction form
    249,657.85/374,489.51 = 72,166.40/x
  3. Step 3: Cross multiply
    249,657.85x = 374,489.51 × 72,166.40
  4. Step 4: Simplify right side
    249,657.85x = 27,025,559,774.46
  5. Step 5: Solve for x
    x = 27,025,559,774.46/249,657.85
  6. Step 6: Final answer
    x = 108,250.39

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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.