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Finding the Fourth Proportional to 1,385.48, 1,907.88 and 1,035.56

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Solution

The fourth proportional to 1,385.48, 1,907.88 and 1,035.56 is: 1,426.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.48 : 1,907.88 = 1,035.56 : x
  2. Step 2: Convert to fraction form
    1,385.48/1,907.88 = 1,035.56/x
  3. Step 3: Cross multiply
    1,385.48x = 1,907.88 × 1,035.56
  4. Step 4: Simplify right side
    1,385.48x = 1,975,724.21
  5. Step 5: Solve for x
    x = 1,975,724.21/1,385.48
  6. Step 6: Final answer
    x = 1,426.02

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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.