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Finding the Fourth Proportional to 60,290.92, 90,403.26 and 47,890.36

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Solution

The fourth proportional to 60,290.92, 90,403.26 and 47,890.36 is: 71,809.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,290.92 : 90,403.26 = 47,890.36 : x
  2. Step 2: Convert to fraction form
    60,290.92/90,403.26 = 47,890.36/x
  3. Step 3: Cross multiply
    60,290.92x = 90,403.26 × 47,890.36
  4. Step 4: Simplify right side
    60,290.92x = 4,329,444,666.57
  5. Step 5: Solve for x
    x = 4,329,444,666.57/60,290.92
  6. Step 6: Final answer
    x = 71,809.23

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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.