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Finding the Fourth Proportional to 932.48, 1,284.76 and 683.52

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Solution

The fourth proportional to 932.48, 1,284.76 and 683.52 is: 941.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.48 : 1,284.76 = 683.52 : x
  2. Step 2: Convert to fraction form
    932.48/1,284.76 = 683.52/x
  3. Step 3: Cross multiply
    932.48x = 1,284.76 × 683.52
  4. Step 4: Simplify right side
    932.48x = 878,159.16
  5. Step 5: Solve for x
    x = 878,159.16/932.48
  6. Step 6: Final answer
    x = 941.75

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1.5x scale

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.