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Finding the Fourth Proportional to 713,716.11, 1,070,235.18 and 414,288.54

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Solution

The fourth proportional to 713,716.11, 1,070,235.18 and 414,288.54 is: 621,236.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,716.11 : 1,070,235.18 = 414,288.54 : x
  2. Step 2: Convert to fraction form
    713,716.11/1,070,235.18 = 414,288.54/x
  3. Step 3: Cross multiply
    713,716.11x = 1,070,235.18 × 414,288.54
  4. Step 4: Simplify right side
    713,716.11x = 443,386,170,178.84
  5. Step 5: Solve for x
    x = 443,386,170,178.84/713,716.11
  6. Step 6: Final answer
    x = 621,236.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.