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Finding the Fourth Proportional to 66,196, 91,428.48 and 43,801.12

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Solution

The fourth proportional to 66,196, 91,428.48 and 43,801.12 is: 60,497.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,196 : 91,428.48 = 43,801.12 : x
  2. Step 2: Convert to fraction form
    66,196/91,428.48 = 43,801.12/x
  3. Step 3: Cross multiply
    66,196x = 91,428.48 × 43,801.12
  4. Step 4: Simplify right side
    66,196x = 4,004,669,823.90
  5. Step 5: Solve for x
    x = 4,004,669,823.90/66,196
  6. Step 6: Final answer
    x = 60,497.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.