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Finding the Fourth Proportional to 303,353.17, 418,778.93 and 188,668.78

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Solution

The fourth proportional to 303,353.17, 418,778.93 and 188,668.78 is: 260,457.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,353.17 : 418,778.93 = 188,668.78 : x
  2. Step 2: Convert to fraction form
    303,353.17/418,778.93 = 188,668.78/x
  3. Step 3: Cross multiply
    303,353.17x = 418,778.93 × 188,668.78
  4. Step 4: Simplify right side
    303,353.17x = 79,010,509,812.81
  5. Step 5: Solve for x
    x = 79,010,509,812.81/303,353.17
  6. Step 6: Final answer
    x = 260,457.18

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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.