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Finding the Fourth Proportional to 265,733.74, 398,532.48 and 78,701.50

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Solution

The fourth proportional to 265,733.74, 398,532.48 and 78,701.50 is: 118,032.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,733.74 : 398,532.48 = 78,701.50 : x
  2. Step 2: Convert to fraction form
    265,733.74/398,532.48 = 78,701.50/x
  3. Step 3: Cross multiply
    265,733.74x = 398,532.48 × 78,701.50
  4. Step 4: Simplify right side
    265,733.74x = 31,365,103,974.72
  5. Step 5: Solve for x
    x = 31,365,103,974.72/265,733.74
  6. Step 6: Final answer
    x = 118,032.07

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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.