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Finding the Fourth Proportional to 76,203.68, 105,164.85 and 45,988.52

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Solution

The fourth proportional to 76,203.68, 105,164.85 and 45,988.52 is: 63,466.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,203.68 : 105,164.85 = 45,988.52 : x
  2. Step 2: Convert to fraction form
    76,203.68/105,164.85 = 45,988.52/x
  3. Step 3: Cross multiply
    76,203.68x = 105,164.85 × 45,988.52
  4. Step 4: Simplify right side
    76,203.68x = 4,836,375,807.52
  5. Step 5: Solve for x
    x = 4,836,375,807.52/76,203.68
  6. Step 6: Final answer
    x = 63,466.43

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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.