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Finding the Fourth Proportional to 118,697.60, 163,879.18 and 105,928.94

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Solution

The fourth proportional to 118,697.60, 163,879.18 and 105,928.94 is: 146,250.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,697.60 : 163,879.18 = 105,928.94 : x
  2. Step 2: Convert to fraction form
    118,697.60/163,879.18 = 105,928.94/x
  3. Step 3: Cross multiply
    118,697.60x = 163,879.18 × 105,928.94
  4. Step 4: Simplify right side
    118,697.60x = 17,359,547,825.47
  5. Step 5: Solve for x
    x = 17,359,547,825.47/118,697.60
  6. Step 6: Final answer
    x = 146,250.20

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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.