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Finding the Fourth Proportional to 111,411.75, 153,749.04 and 61,110.75

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Solution

The fourth proportional to 111,411.75, 153,749.04 and 61,110.75 is: 84,333.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,411.75 : 153,749.04 = 61,110.75 : x
  2. Step 2: Convert to fraction form
    111,411.75/153,749.04 = 61,110.75/x
  3. Step 3: Cross multiply
    111,411.75x = 153,749.04 × 61,110.75
  4. Step 4: Simplify right side
    111,411.75x = 9,395,719,146.18
  5. Step 5: Solve for x
    x = 9,395,719,146.18/111,411.75
  6. Step 6: Final answer
    x = 84,333.29

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1.5x scale

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.