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Finding the Fourth Proportional to 249,171.59, 343,834.71 and 138,781.81

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Solution

The fourth proportional to 249,171.59, 343,834.71 and 138,781.81 is: 191,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,171.59 : 343,834.71 = 138,781.81 : x
  2. Step 2: Convert to fraction form
    249,171.59/343,834.71 = 138,781.81/x
  3. Step 3: Cross multiply
    249,171.59x = 343,834.71 × 138,781.81
  4. Step 4: Simplify right side
    249,171.59x = 47,718,003,394.63
  5. Step 5: Solve for x
    x = 47,718,003,394.63/249,171.59
  6. Step 6: Final answer
    x = 191,506.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.