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Finding the Fourth Proportional to 313,445.20, 470,369.40 and 173,304.40

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Solution

The fourth proportional to 313,445.20, 470,369.40 and 173,304.40 is: 260,068.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,445.20 : 470,369.40 = 173,304.40 : x
  2. Step 2: Convert to fraction form
    313,445.20/470,369.40 = 173,304.40/x
  3. Step 3: Cross multiply
    313,445.20x = 470,369.40 × 173,304.40
  4. Step 4: Simplify right side
    313,445.20x = 81,517,086,645.36
  5. Step 5: Solve for x
    x = 81,517,086,645.36/313,445.20
  6. Step 6: Final answer
    x = 260,068.06

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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.