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Finding the Fourth Proportional to 92,852.66, 128,139.75 and 52,565.60

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Solution

The fourth proportional to 92,852.66, 128,139.75 and 52,565.60 is: 72,542.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,852.66 : 128,139.75 = 52,565.60 : x
  2. Step 2: Convert to fraction form
    92,852.66/128,139.75 = 52,565.60/x
  3. Step 3: Cross multiply
    92,852.66x = 128,139.75 × 52,565.60
  4. Step 4: Simplify right side
    92,852.66x = 6,735,743,162.95
  5. Step 5: Solve for x
    x = 6,735,743,162.95/92,852.66
  6. Step 6: Final answer
    x = 72,542.27

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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.