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Finding the Fourth Proportional to 97,218.80, 145,828.20 and 34,881.20

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Solution

The fourth proportional to 97,218.80, 145,828.20 and 34,881.20 is: 52,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,218.80 : 145,828.20 = 34,881.20 : x
  2. Step 2: Convert to fraction form
    97,218.80/145,828.20 = 34,881.20/x
  3. Step 3: Cross multiply
    97,218.80x = 145,828.20 × 34,881.20
  4. Step 4: Simplify right side
    97,218.80x = 5,086,662,609.84
  5. Step 5: Solve for x
    x = 5,086,662,609.84/97,218.80
  6. Step 6: Final answer
    x = 52,321.80

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Similar ratio
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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.