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Finding the Fourth Proportional to 66,031.62, 99,045.81 and 19,284.90

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Solution

The fourth proportional to 66,031.62, 99,045.81 and 19,284.90 is: 28,926.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,031.62 : 99,045.81 = 19,284.90 : x
  2. Step 2: Convert to fraction form
    66,031.62/99,045.81 = 19,284.90/x
  3. Step 3: Cross multiply
    66,031.62x = 99,045.81 × 19,284.90
  4. Step 4: Simplify right side
    66,031.62x = 1,910,088,541.27
  5. Step 5: Solve for x
    x = 1,910,088,541.27/66,031.62
  6. Step 6: Final answer
    x = 28,926.88

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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.