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Finding the Fourth Proportional to 76,845.70, 106,055.22 and 45,041.32

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Solution

The fourth proportional to 76,845.70, 106,055.22 and 45,041.32 is: 62,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,845.70 : 106,055.22 = 45,041.32 : x
  2. Step 2: Convert to fraction form
    76,845.70/106,055.22 = 45,041.32/x
  3. Step 3: Cross multiply
    76,845.70x = 106,055.22 × 45,041.32
  4. Step 4: Simplify right side
    76,845.70x = 4,776,867,101.69
  5. Step 5: Solve for x
    x = 4,776,867,101.69/76,845.70
  6. Step 6: Final answer
    x = 62,161.80

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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.