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Finding the Fourth Proportional to 249,688.72, 374,531.64 and 83,475.28

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Solution

The fourth proportional to 249,688.72, 374,531.64 and 83,475.28 is: 125,212.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,688.72 : 374,531.64 = 83,475.28 : x
  2. Step 2: Convert to fraction form
    249,688.72/374,531.64 = 83,475.28/x
  3. Step 3: Cross multiply
    249,688.72x = 374,531.64 × 83,475.28
  4. Step 4: Simplify right side
    249,688.72x = 31,264,133,517.86
  5. Step 5: Solve for x
    x = 31,264,133,517.86/249,688.72
  6. Step 6: Final answer
    x = 125,212.44

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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.