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Finding the Fourth Proportional to 75,092.81, 103,639.70 and 42,827.49

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Solution

The fourth proportional to 75,092.81, 103,639.70 and 42,827.49 is: 59,108.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,092.81 : 103,639.70 = 42,827.49 : x
  2. Step 2: Convert to fraction form
    75,092.81/103,639.70 = 42,827.49/x
  3. Step 3: Cross multiply
    75,092.81x = 103,639.70 × 42,827.49
  4. Step 4: Simplify right side
    75,092.81x = 4,438,628,215.35
  5. Step 5: Solve for x
    x = 4,438,628,215.35/75,092.81
  6. Step 6: Final answer
    x = 59,108.56

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1.5x scale

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.