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Finding the Fourth Proportional to 74,963.70, 112,373.55 and 43,341.30

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Solution

The fourth proportional to 74,963.70, 112,373.55 and 43,341.30 is: 64,970.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,963.70 : 112,373.55 = 43,341.30 : x
  2. Step 2: Convert to fraction form
    74,963.70/112,373.55 = 43,341.30/x
  3. Step 3: Cross multiply
    74,963.70x = 112,373.55 × 43,341.30
  4. Step 4: Simplify right side
    74,963.70x = 4,870,415,742.62
  5. Step 5: Solve for x
    x = 4,870,415,742.62/74,963.70
  6. Step 6: Final answer
    x = 64,970.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.