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Finding the Fourth Proportional to 76,847.52, 106,058.16 and 45,043.32

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Solution

The fourth proportional to 76,847.52, 106,058.16 and 45,043.32 is: 62,164.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,847.52 : 106,058.16 = 45,043.32 : x
  2. Step 2: Convert to fraction form
    76,847.52/106,058.16 = 45,043.32/x
  3. Step 3: Cross multiply
    76,847.52x = 106,058.16 × 45,043.32
  4. Step 4: Simplify right side
    76,847.52x = 4,777,211,639.49
  5. Step 5: Solve for x
    x = 4,777,211,639.49/76,847.52
  6. Step 6: Final answer
    x = 62,164.81

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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.