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Finding the Fourth Proportional to 288,587.70, 398,134.58 and 191,838.33

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Solution

The fourth proportional to 288,587.70, 398,134.58 and 191,838.33 is: 264,659.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,587.70 : 398,134.58 = 191,838.33 : x
  2. Step 2: Convert to fraction form
    288,587.70/398,134.58 = 191,838.33/x
  3. Step 3: Cross multiply
    288,587.70x = 398,134.58 × 191,838.33
  4. Step 4: Simplify right side
    288,587.70x = 76,377,471,983.26
  5. Step 5: Solve for x
    x = 76,377,471,983.26/288,587.70
  6. Step 6: Final answer
    x = 264,659.48

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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.