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Finding the Fourth Proportional to 165,336.80, 248,005.20 and 98,981.60

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Solution

The fourth proportional to 165,336.80, 248,005.20 and 98,981.60 is: 148,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,336.80 : 248,005.20 = 98,981.60 : x
  2. Step 2: Convert to fraction form
    165,336.80/248,005.20 = 98,981.60/x
  3. Step 3: Cross multiply
    165,336.80x = 248,005.20 × 98,981.60
  4. Step 4: Simplify right side
    165,336.80x = 24,547,951,504.32
  5. Step 5: Solve for x
    x = 24,547,951,504.32/165,336.80
  6. Step 6: Final answer
    x = 148,472.40

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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.