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Finding the Fourth Proportional to 157,542.40, 236,428.80 and 104,934.40

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Solution

The fourth proportional to 157,542.40, 236,428.80 and 104,934.40 is: 157,478.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,542.40 : 236,428.80 = 104,934.40 : x
  2. Step 2: Convert to fraction form
    157,542.40/236,428.80 = 104,934.40/x
  3. Step 3: Cross multiply
    157,542.40x = 236,428.80 × 104,934.40
  4. Step 4: Simplify right side
    157,542.40x = 24,809,514,270.72
  5. Step 5: Solve for x
    x = 24,809,514,270.72/157,542.40
  6. Step 6: Final answer
    x = 157,478.33

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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.