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Finding the Fourth Proportional to 66,656.34, 91,985.94 and 36,442.02

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Solution

The fourth proportional to 66,656.34, 91,985.94 and 36,442.02 is: 50,290.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,656.34 : 91,985.94 = 36,442.02 : x
  2. Step 2: Convert to fraction form
    66,656.34/91,985.94 = 36,442.02/x
  3. Step 3: Cross multiply
    66,656.34x = 91,985.94 × 36,442.02
  4. Step 4: Simplify right side
    66,656.34x = 3,352,153,465.20
  5. Step 5: Solve for x
    x = 3,352,153,465.20/66,656.34
  6. Step 6: Final answer
    x = 50,290.09

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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.