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Finding the Fourth Proportional to 70,964.50, 106,446.75 and 39,802.18

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Solution

The fourth proportional to 70,964.50, 106,446.75 and 39,802.18 is: 59,703.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,964.50 : 106,446.75 = 39,802.18 : x
  2. Step 2: Convert to fraction form
    70,964.50/106,446.75 = 39,802.18/x
  3. Step 3: Cross multiply
    70,964.50x = 106,446.75 × 39,802.18
  4. Step 4: Simplify right side
    70,964.50x = 4,236,812,703.92
  5. Step 5: Solve for x
    x = 4,236,812,703.92/70,964.50
  6. Step 6: Final answer
    x = 59,703.27

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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.