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Finding the Fourth Proportional to 313,666.32, 432,845.28 and 177,697.20

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Solution

The fourth proportional to 313,666.32, 432,845.28 and 177,697.20 is: 245,214.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,666.32 : 432,845.28 = 177,697.20 : x
  2. Step 2: Convert to fraction form
    313,666.32/432,845.28 = 177,697.20/x
  3. Step 3: Cross multiply
    313,666.32x = 432,845.28 × 177,697.20
  4. Step 4: Simplify right side
    313,666.32x = 76,915,394,289.22
  5. Step 5: Solve for x
    x = 76,915,394,289.22/313,666.32
  6. Step 6: Final answer
    x = 245,214.07

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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.