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Finding the Fourth Proportional to 111,568.88, 153,965.06 and 61,267.88

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Solution

The fourth proportional to 111,568.88, 153,965.06 and 61,267.88 is: 84,549.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,568.88 : 153,965.06 = 61,267.88 : x
  2. Step 2: Convert to fraction form
    111,568.88/153,965.06 = 61,267.88/x
  3. Step 3: Cross multiply
    111,568.88x = 153,965.06 × 61,267.88
  4. Step 4: Simplify right side
    111,568.88x = 9,433,111,744.11
  5. Step 5: Solve for x
    x = 9,433,111,744.11/111,568.88
  6. Step 6: Final answer
    x = 84,549.67

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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.