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Finding the Fourth Proportional to 103,203.40, 154,808.52 and 36,642.64

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Solution

The fourth proportional to 103,203.40, 154,808.52 and 36,642.64 is: 54,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,203.40 : 154,808.52 = 36,642.64 : x
  2. Step 2: Convert to fraction form
    103,203.40/154,808.52 = 36,642.64/x
  3. Step 3: Cross multiply
    103,203.40x = 154,808.52 × 36,642.64
  4. Step 4: Simplify right side
    103,203.40x = 5,672,592,867.29
  5. Step 5: Solve for x
    x = 5,672,592,867.29/103,203.40
  6. Step 6: Final answer
    x = 54,965.17

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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.