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Finding the Fourth Proportional to 60,042.40, 90,065.42 and 20,598.94

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Solution

The fourth proportional to 60,042.40, 90,065.42 and 20,598.94 is: 30,899.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,042.40 : 90,065.42 = 20,598.94 : x
  2. Step 2: Convert to fraction form
    60,042.40/90,065.42 = 20,598.94/x
  3. Step 3: Cross multiply
    60,042.40x = 90,065.42 × 20,598.94
  4. Step 4: Simplify right side
    60,042.40x = 1,855,252,182.65
  5. Step 5: Solve for x
    x = 1,855,252,182.65/60,042.40
  6. Step 6: Final answer
    x = 30,899.03

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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.