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Finding the Fourth Proportional to 260,818.92, 359,931.60 and 153,393.48

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Solution

The fourth proportional to 260,818.92, 359,931.60 and 153,393.48 is: 211,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,818.92 : 359,931.60 = 153,393.48 : x
  2. Step 2: Convert to fraction form
    260,818.92/359,931.60 = 153,393.48/x
  3. Step 3: Cross multiply
    260,818.92x = 359,931.60 × 153,393.48
  4. Step 4: Simplify right side
    260,818.92x = 55,211,160,685.97
  5. Step 5: Solve for x
    x = 55,211,160,685.97/260,818.92
  6. Step 6: Final answer
    x = 211,683.88

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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.