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Finding the Fourth Proportional to 66,482.90, 92,134.53 and 65,221.27

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Solution

The fourth proportional to 66,482.90, 92,134.53 and 65,221.27 is: 90,386.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,482.90 : 92,134.53 = 65,221.27 : x
  2. Step 2: Convert to fraction form
    66,482.90/92,134.53 = 65,221.27/x
  3. Step 3: Cross multiply
    66,482.90x = 92,134.53 × 65,221.27
  4. Step 4: Simplify right side
    66,482.90x = 6,009,131,057.45
  5. Step 5: Solve for x
    x = 6,009,131,057.45/66,482.90
  6. Step 6: Final answer
    x = 90,386.12

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.