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Finding the Fourth Proportional to 312,367.71, 468,551.56 and 75,710.40

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Solution

The fourth proportional to 312,367.71, 468,551.56 and 75,710.40 is: 113,565.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,367.71 : 468,551.56 = 75,710.40 : x
  2. Step 2: Convert to fraction form
    312,367.71/468,551.56 = 75,710.40/x
  3. Step 3: Cross multiply
    312,367.71x = 468,551.56 × 75,710.40
  4. Step 4: Simplify right side
    312,367.71x = 35,474,226,028.22
  5. Step 5: Solve for x
    x = 35,474,226,028.22/312,367.71
  6. Step 6: Final answer
    x = 113,565.60

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1.5x scale

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.