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Finding the Fourth Proportional to 111,462.48, 153,817.80 and 61,162.32

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Solution

The fourth proportional to 111,462.48, 153,817.80 and 61,162.32 is: 84,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,462.48 : 153,817.80 = 61,162.32 : x
  2. Step 2: Convert to fraction form
    111,462.48/153,817.80 = 61,162.32/x
  3. Step 3: Cross multiply
    111,462.48x = 153,817.80 × 61,162.32
  4. Step 4: Simplify right side
    111,462.48x = 9,407,853,505.30
  5. Step 5: Solve for x
    x = 9,407,853,505.30/111,462.48
  6. Step 6: Final answer
    x = 84,403.77

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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.