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Finding the Fourth Proportional to 65,211.66, 97,816.41 and 20,838.12

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Solution

The fourth proportional to 65,211.66, 97,816.41 and 20,838.12 is: 31,256.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,211.66 : 97,816.41 = 20,838.12 : x
  2. Step 2: Convert to fraction form
    65,211.66/97,816.41 = 20,838.12/x
  3. Step 3: Cross multiply
    65,211.66x = 97,816.41 × 20,838.12
  4. Step 4: Simplify right side
    65,211.66x = 2,038,310,089.55
  5. Step 5: Solve for x
    x = 2,038,310,089.55/65,211.66
  6. Step 6: Final answer
    x = 31,256.83

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1.5x scale

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.