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Finding the Fourth Proportional to 66,196.68, 99,239.13 and 28,728.42

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Solution

The fourth proportional to 66,196.68, 99,239.13 and 28,728.42 is: 43,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,196.68 : 99,239.13 = 28,728.42 : x
  2. Step 2: Convert to fraction form
    66,196.68/99,239.13 = 28,728.42/x
  3. Step 3: Cross multiply
    66,196.68x = 99,239.13 × 28,728.42
  4. Step 4: Simplify right side
    66,196.68x = 2,850,983,407.07
  5. Step 5: Solve for x
    x = 2,850,983,407.07/66,196.68
  6. Step 6: Final answer
    x = 43,068.37

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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.