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Finding the Fourth Proportional to 66,296.46, 99,313.46 and 57,985.86

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Solution

The fourth proportional to 66,296.46, 99,313.46 and 57,985.86 is: 86,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,296.46 : 99,313.46 = 57,985.86 : x
  2. Step 2: Convert to fraction form
    66,296.46/99,313.46 = 57,985.86/x
  3. Step 3: Cross multiply
    66,296.46x = 99,313.46 × 57,985.86
  4. Step 4: Simplify right side
    66,296.46x = 5,758,776,387.68
  5. Step 5: Solve for x
    x = 5,758,776,387.68/66,296.46
  6. Step 6: Final answer
    x = 86,864.01

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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.