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Finding the Fourth Proportional to 75,156.51, 103,692.51 and 43,321.08

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Solution

The fourth proportional to 75,156.51, 103,692.51 and 43,321.08 is: 59,769.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,156.51 : 103,692.51 = 43,321.08 : x
  2. Step 2: Convert to fraction form
    75,156.51/103,692.51 = 43,321.08/x
  3. Step 3: Cross multiply
    75,156.51x = 103,692.51 × 43,321.08
  4. Step 4: Simplify right side
    75,156.51x = 4,492,071,521.11
  5. Step 5: Solve for x
    x = 4,492,071,521.11/75,156.51
  6. Step 6: Final answer
    x = 59,769.56

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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.