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Finding the Fourth Proportional to 112,661.40, 168,992.10 and 101,580.60

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Solution

The fourth proportional to 112,661.40, 168,992.10 and 101,580.60 is: 152,370.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,661.40 : 168,992.10 = 101,580.60 : x
  2. Step 2: Convert to fraction form
    112,661.40/168,992.10 = 101,580.60/x
  3. Step 3: Cross multiply
    112,661.40x = 168,992.10 × 101,580.60
  4. Step 4: Simplify right side
    112,661.40x = 17,166,318,913.26
  5. Step 5: Solve for x
    x = 17,166,318,913.26/112,661.40
  6. Step 6: Final answer
    x = 152,370.90

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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.