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Finding the Fourth Proportional to 88,285, 121,833.32 and 48,541

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Solution

The fourth proportional to 88,285, 121,833.32 and 48,541 is: 66,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,285 : 121,833.32 = 48,541 : x
  2. Step 2: Convert to fraction form
    88,285/121,833.32 = 48,541/x
  3. Step 3: Cross multiply
    88,285x = 121,833.32 × 48,541
  4. Step 4: Simplify right side
    88,285x = 5,913,911,186.12
  5. Step 5: Solve for x
    x = 5,913,911,186.12/88,285
  6. Step 6: Final answer
    x = 66,986.59

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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.