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Finding the Fourth Proportional to 60,342.30, 90,340.65 and 53,430.30

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Solution

The fourth proportional to 60,342.30, 90,340.65 and 53,430.30 is: 79,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,342.30 : 90,340.65 = 53,430.30 : x
  2. Step 2: Convert to fraction form
    60,342.30/90,340.65 = 53,430.30/x
  3. Step 3: Cross multiply
    60,342.30x = 90,340.65 × 53,430.30
  4. Step 4: Simplify right side
    60,342.30x = 4,826,928,031.70
  5. Step 5: Solve for x
    x = 4,826,928,031.70/60,342.30
  6. Step 6: Final answer
    x = 79,992.44

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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.