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Finding the Fourth Proportional to 279,955.78, 386,341.24 and 152,632.30

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Solution

The fourth proportional to 279,955.78, 386,341.24 and 152,632.30 is: 210,633.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,955.78 : 386,341.24 = 152,632.30 : x
  2. Step 2: Convert to fraction form
    279,955.78/386,341.24 = 152,632.30/x
  3. Step 3: Cross multiply
    279,955.78x = 386,341.24 × 152,632.30
  4. Step 4: Simplify right side
    279,955.78x = 58,968,152,046.05
  5. Step 5: Solve for x
    x = 58,968,152,046.05/279,955.78
  6. Step 6: Final answer
    x = 210,633.81

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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.