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Finding the Fourth Proportional to 65,011.50, 97,553.70 and 64,515.78

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Solution

The fourth proportional to 65,011.50, 97,553.70 and 64,515.78 is: 96,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,011.50 : 97,553.70 = 64,515.78 : x
  2. Step 2: Convert to fraction form
    65,011.50/97,553.70 = 64,515.78/x
  3. Step 3: Cross multiply
    65,011.50x = 97,553.70 × 64,515.78
  4. Step 4: Simplify right side
    65,011.50x = 6,293,753,047.39
  5. Step 5: Solve for x
    x = 6,293,753,047.39/65,011.50
  6. Step 6: Final answer
    x = 96,809.84

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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.