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Finding the Fourth Proportional to 111,937.85, 156,920.35 and 111,937.85

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Solution

The fourth proportional to 111,937.85, 156,920.35 and 111,937.85 is: 156,920.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,937.85 : 156,920.35 = 111,937.85 : x
  2. Step 2: Convert to fraction form
    111,937.85/156,920.35 = 111,937.85/x
  3. Step 3: Cross multiply
    111,937.85x = 156,920.35 × 111,937.85
  4. Step 4: Simplify right side
    111,937.85x = 17,565,326,600.25
  5. Step 5: Solve for x
    x = 17,565,326,600.25/111,937.85
  6. Step 6: Final answer
    x = 156,920.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.