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Finding the Fourth Proportional to 118,215.78, 177,323.70 and 35,109.78

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Solution

The fourth proportional to 118,215.78, 177,323.70 and 35,109.78 is: 52,664.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,215.78 : 177,323.70 = 35,109.78 : x
  2. Step 2: Convert to fraction form
    118,215.78/177,323.70 = 35,109.78/x
  3. Step 3: Cross multiply
    118,215.78x = 177,323.70 × 35,109.78
  4. Step 4: Simplify right side
    118,215.78x = 6,225,796,095.79
  5. Step 5: Solve for x
    x = 6,225,796,095.79/118,215.78
  6. Step 6: Final answer
    x = 52,664.68

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1.5x scale

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.