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Finding the Fourth Proportional to 418,019.96, 626,869.49 and 177,981.68

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Solution

The fourth proportional to 418,019.96, 626,869.49 and 177,981.68 is: 266,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,019.96 : 626,869.49 = 177,981.68 : x
  2. Step 2: Convert to fraction form
    418,019.96/626,869.49 = 177,981.68/x
  3. Step 3: Cross multiply
    418,019.96x = 626,869.49 × 177,981.68
  4. Step 4: Simplify right side
    418,019.96x = 111,571,280,946.69
  5. Step 5: Solve for x
    x = 111,571,280,946.69/418,019.96
  6. Step 6: Final answer
    x = 266,904.20

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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.