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Finding the Fourth Proportional to 66,554.64, 91,860.72 and 43,897.68

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Solution

The fourth proportional to 66,554.64, 91,860.72 and 43,897.68 is: 60,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,554.64 : 91,860.72 = 43,897.68 : x
  2. Step 2: Convert to fraction form
    66,554.64/91,860.72 = 43,897.68/x
  3. Step 3: Cross multiply
    66,554.64x = 91,860.72 × 43,897.68
  4. Step 4: Simplify right side
    66,554.64x = 4,032,472,491.13
  5. Step 5: Solve for x
    x = 4,032,472,491.13/66,554.64
  6. Step 6: Final answer
    x = 60,588.90

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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.