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Finding the Fourth Proportional to 65,020.94, 97,521.45 and 20,641.94

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Solution

The fourth proportional to 65,020.94, 97,521.45 and 20,641.94 is: 30,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,020.94 : 97,521.45 = 20,641.94 : x
  2. Step 2: Convert to fraction form
    65,020.94/97,521.45 = 20,641.94/x
  3. Step 3: Cross multiply
    65,020.94x = 97,521.45 × 20,641.94
  4. Step 4: Simplify right side
    65,020.94x = 2,013,031,919.61
  5. Step 5: Solve for x
    x = 2,013,031,919.61/65,020.94
  6. Step 6: Final answer
    x = 30,959.75

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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.