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Finding the Fourth Proportional to 66,365.67, 99,314.55 and 41,417.40

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Solution

The fourth proportional to 66,365.67, 99,314.55 and 41,417.40 is: 61,980.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,365.67 : 99,314.55 = 41,417.40 : x
  2. Step 2: Convert to fraction form
    66,365.67/99,314.55 = 41,417.40/x
  3. Step 3: Cross multiply
    66,365.67x = 99,314.55 × 41,417.40
  4. Step 4: Simplify right side
    66,365.67x = 4,113,350,443.17
  5. Step 5: Solve for x
    x = 4,113,350,443.17/66,365.67
  6. Step 6: Final answer
    x = 61,980.09

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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.