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Finding the Fourth Proportional to 66,205.92, 99,312.30 and 21,830.88

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Solution

The fourth proportional to 66,205.92, 99,312.30 and 21,830.88 is: 32,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,205.92 : 99,312.30 = 21,830.88 : x
  2. Step 2: Convert to fraction form
    66,205.92/99,312.30 = 21,830.88/x
  3. Step 3: Cross multiply
    66,205.92x = 99,312.30 × 21,830.88
  4. Step 4: Simplify right side
    66,205.92x = 2,168,074,903.82
  5. Step 5: Solve for x
    x = 2,168,074,903.82/66,205.92
  6. Step 6: Final answer
    x = 32,747.45

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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.