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Finding the Fourth Proportional to 1,353.46, 1,867.56 and 763.93

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Solution

The fourth proportional to 1,353.46, 1,867.56 and 763.93 is: 1,054.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.46 : 1,867.56 = 763.93 : x
  2. Step 2: Convert to fraction form
    1,353.46/1,867.56 = 763.93/x
  3. Step 3: Cross multiply
    1,353.46x = 1,867.56 × 763.93
  4. Step 4: Simplify right side
    1,353.46x = 1,426,685.11
  5. Step 5: Solve for x
    x = 1,426,685.11/1,353.46
  6. Step 6: Final answer
    x = 1,054.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.