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Finding the Fourth Proportional to 1,041.91, 1,437.57 and 692.60

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Solution

The fourth proportional to 1,041.91, 1,437.57 and 692.60 is: 955.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.91 : 1,437.57 = 692.60 : x
  2. Step 2: Convert to fraction form
    1,041.91/1,437.57 = 692.60/x
  3. Step 3: Cross multiply
    1,041.91x = 1,437.57 × 692.60
  4. Step 4: Simplify right side
    1,041.91x = 995,663.83
  5. Step 5: Solve for x
    x = 995,663.83/1,041.91
  6. Step 6: Final answer
    x = 955.61

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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.