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Finding the Fourth Proportional to 249,986.40, 375,016.48 and 72,470.32

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Solution

The fourth proportional to 249,986.40, 375,016.48 and 72,470.32 is: 108,716.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,986.40 : 375,016.48 = 72,470.32 : x
  2. Step 2: Convert to fraction form
    249,986.40/375,016.48 = 72,470.32/x
  3. Step 3: Cross multiply
    249,986.40x = 375,016.48 × 72,470.32
  4. Step 4: Simplify right side
    249,986.40x = 27,177,564,310.87
  5. Step 5: Solve for x
    x = 27,177,564,310.87/249,986.40
  6. Step 6: Final answer
    x = 108,716.17

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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.