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Finding the Fourth Proportional to 83,434.80, 124,990.92 and 46,386.48

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Solution

The fourth proportional to 83,434.80, 124,990.92 and 46,386.48 is: 69,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,434.80 : 124,990.92 = 46,386.48 : x
  2. Step 2: Convert to fraction form
    83,434.80/124,990.92 = 46,386.48/x
  3. Step 3: Cross multiply
    83,434.80x = 124,990.92 × 46,386.48
  4. Step 4: Simplify right side
    83,434.80x = 5,797,888,810.76
  5. Step 5: Solve for x
    x = 5,797,888,810.76/83,434.80
  6. Step 6: Final answer
    x = 69,490.05

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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.