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Finding the Fourth Proportional to 112,046.40, 156,981.60 and 112,046.40

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Solution

The fourth proportional to 112,046.40, 156,981.60 and 112,046.40 is: 156,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,046.40 : 156,981.60 = 112,046.40 : x
  2. Step 2: Convert to fraction form
    112,046.40/156,981.60 = 112,046.40/x
  3. Step 3: Cross multiply
    112,046.40x = 156,981.60 × 112,046.40
  4. Step 4: Simplify right side
    112,046.40x = 17,589,223,146.24
  5. Step 5: Solve for x
    x = 17,589,223,146.24/112,046.40
  6. Step 6: Final answer
    x = 156,981.60

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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.