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Finding the Fourth Proportional to 249,718, 344,605.60 and 136,540.75

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Solution

The fourth proportional to 249,718, 344,605.60 and 136,540.75 is: 188,423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,718 : 344,605.60 = 136,540.75 : x
  2. Step 2: Convert to fraction form
    249,718/344,605.60 = 136,540.75/x
  3. Step 3: Cross multiply
    249,718x = 344,605.60 × 136,540.75
  4. Step 4: Simplify right side
    249,718x = 47,052,707,078.20
  5. Step 5: Solve for x
    x = 47,052,707,078.20/249,718
  6. Step 6: Final answer
    x = 188,423.37

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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.