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Finding the Fourth Proportional to 60,196.47, 90,211.66 and 45,389.11

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Solution

The fourth proportional to 60,196.47, 90,211.66 and 45,389.11 is: 68,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,196.47 : 90,211.66 = 45,389.11 : x
  2. Step 2: Convert to fraction form
    60,196.47/90,211.66 = 45,389.11/x
  3. Step 3: Cross multiply
    60,196.47x = 90,211.66 × 45,389.11
  4. Step 4: Simplify right side
    60,196.47x = 4,094,626,959.02
  5. Step 5: Solve for x
    x = 4,094,626,959.02/60,196.47
  6. Step 6: Final answer
    x = 68,021.05

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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.