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Finding the Fourth Proportional to 308,047.20, 425,101.68 and 180,698.28

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Solution

The fourth proportional to 308,047.20, 425,101.68 and 180,698.28 is: 249,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,047.20 : 425,101.68 = 180,698.28 : x
  2. Step 2: Convert to fraction form
    308,047.20/425,101.68 = 180,698.28/x
  3. Step 3: Cross multiply
    308,047.20x = 425,101.68 × 180,698.28
  4. Step 4: Simplify right side
    308,047.20x = 76,815,142,401.11
  5. Step 5: Solve for x
    x = 76,815,142,401.11/308,047.20
  6. Step 6: Final answer
    x = 249,361.60

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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.