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Finding the Fourth Proportional to 60,690.02, 91,048.02 and 21,248.42

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Solution

The fourth proportional to 60,690.02, 91,048.02 and 21,248.42 is: 31,877.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,690.02 : 91,048.02 = 21,248.42 : x
  2. Step 2: Convert to fraction form
    60,690.02/91,048.02 = 21,248.42/x
  3. Step 3: Cross multiply
    60,690.02x = 91,048.02 × 21,248.42
  4. Step 4: Simplify right side
    60,690.02x = 1,934,626,034.21
  5. Step 5: Solve for x
    x = 1,934,626,034.21/60,690.02
  6. Step 6: Final answer
    x = 31,877.17

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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.