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Finding the Fourth Proportional to 311,955.60, 467,929.20 and 75,296.16

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Solution

The fourth proportional to 311,955.60, 467,929.20 and 75,296.16 is: 112,943.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,955.60 : 467,929.20 = 75,296.16 : x
  2. Step 2: Convert to fraction form
    311,955.60/467,929.20 = 75,296.16/x
  3. Step 3: Cross multiply
    311,955.60x = 467,929.20 × 75,296.16
  4. Step 4: Simplify right side
    311,955.60x = 35,233,271,911.87
  5. Step 5: Solve for x
    x = 35,233,271,911.87/311,955.60
  6. Step 6: Final answer
    x = 112,943.23

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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.