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Finding the Fourth Proportional to 1,113.12, 1,534.71 and 714.08

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Solution

The fourth proportional to 1,113.12, 1,534.71 and 714.08 is: 984.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.12 : 1,534.71 = 714.08 : x
  2. Step 2: Convert to fraction form
    1,113.12/1,534.71 = 714.08/x
  3. Step 3: Cross multiply
    1,113.12x = 1,534.71 × 714.08
  4. Step 4: Simplify right side
    1,113.12x = 1,095,898.04
  5. Step 5: Solve for x
    x = 1,095,898.04/1,113.12
  6. Step 6: Final answer
    x = 984.53

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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.