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Finding the Fourth Proportional to 1,070.22, 1,473.47 and 932.16

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Solution

The fourth proportional to 1,070.22, 1,473.47 and 932.16 is: 1,283.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.22 : 1,473.47 = 932.16 : x
  2. Step 2: Convert to fraction form
    1,070.22/1,473.47 = 932.16/x
  3. Step 3: Cross multiply
    1,070.22x = 1,473.47 × 932.16
  4. Step 4: Simplify right side
    1,070.22x = 1,373,509.80
  5. Step 5: Solve for x
    x = 1,373,509.80/1,070.22
  6. Step 6: Final answer
    x = 1,283.39

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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.