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Finding the Fourth Proportional to 249,640.52, 374,460.80 and 83,428.52

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Solution

The fourth proportional to 249,640.52, 374,460.80 and 83,428.52 is: 125,142.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,640.52 : 374,460.80 = 83,428.52 : x
  2. Step 2: Convert to fraction form
    249,640.52/374,460.80 = 83,428.52/x
  3. Step 3: Cross multiply
    249,640.52x = 374,460.80 × 83,428.52
  4. Step 4: Simplify right side
    249,640.52x = 31,240,710,342.02
  5. Step 5: Solve for x
    x = 31,240,710,342.02/249,640.52
  6. Step 6: Final answer
    x = 125,142.79

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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.