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Finding the Fourth Proportional to 66,624.66, 99,908.54 and 38,564.08

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Solution

The fourth proportional to 66,624.66, 99,908.54 and 38,564.08 is: 57,829.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,624.66 : 99,908.54 = 38,564.08 : x
  2. Step 2: Convert to fraction form
    66,624.66/99,908.54 = 38,564.08/x
  3. Step 3: Cross multiply
    66,624.66x = 99,908.54 × 38,564.08
  4. Step 4: Simplify right side
    66,624.66x = 3,852,880,608.15
  5. Step 5: Solve for x
    x = 3,852,880,608.15/66,624.66
  6. Step 6: Final answer
    x = 57,829.65

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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.