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Finding the Fourth Proportional to 65,011.68, 97,516.80 and 20,641.68

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Solution

The fourth proportional to 65,011.68, 97,516.80 and 20,641.68 is: 30,962.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,011.68 : 97,516.80 = 20,641.68 : x
  2. Step 2: Convert to fraction form
    65,011.68/97,516.80 = 20,641.68/x
  3. Step 3: Cross multiply
    65,011.68x = 97,516.80 × 20,641.68
  4. Step 4: Simplify right side
    65,011.68x = 2,012,910,580.22
  5. Step 5: Solve for x
    x = 2,012,910,580.22/65,011.68
  6. Step 6: Final answer
    x = 30,962.29

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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.