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Finding the Fourth Proportional to 66,424.40, 99,646.20 and 22,053.20

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Solution

The fourth proportional to 66,424.40, 99,646.20 and 22,053.20 is: 33,082.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,424.40 : 99,646.20 = 22,053.20 : x
  2. Step 2: Convert to fraction form
    66,424.40/99,646.20 = 22,053.20/x
  3. Step 3: Cross multiply
    66,424.40x = 99,646.20 × 22,053.20
  4. Step 4: Simplify right side
    66,424.40x = 2,197,517,577.84
  5. Step 5: Solve for x
    x = 2,197,517,577.84/66,424.40
  6. Step 6: Final answer
    x = 33,082.99

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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.