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Finding the Fourth Proportional to 288,830.54, 398,451.89 and 186,888.87

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Solution

The fourth proportional to 288,830.54, 398,451.89 and 186,888.87 is: 257,819.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,830.54 : 398,451.89 = 186,888.87 : x
  2. Step 2: Convert to fraction form
    288,830.54/398,451.89 = 186,888.87/x
  3. Step 3: Cross multiply
    288,830.54x = 398,451.89 × 186,888.87
  4. Step 4: Simplify right side
    288,830.54x = 74,466,223,938.69
  5. Step 5: Solve for x
    x = 74,466,223,938.69/288,830.54
  6. Step 6: Final answer
    x = 257,819.77

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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.