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Finding the Fourth Proportional to 313,921.80, 470,882.70 and 187,950.60

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Solution

The fourth proportional to 313,921.80, 470,882.70 and 187,950.60 is: 281,925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,921.80 : 470,882.70 = 187,950.60 : x
  2. Step 2: Convert to fraction form
    313,921.80/470,882.70 = 187,950.60/x
  3. Step 3: Cross multiply
    313,921.80x = 470,882.70 × 187,950.60
  4. Step 4: Simplify right side
    313,921.80x = 88,502,685,994.62
  5. Step 5: Solve for x
    x = 88,502,685,994.62/313,921.80
  6. Step 6: Final answer
    x = 281,925.90

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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.