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Finding the Fourth Proportional to 356,920.32, 535,470.48 and 251,944.32

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Solution

The fourth proportional to 356,920.32, 535,470.48 and 251,944.32 is: 377,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,920.32 : 535,470.48 = 251,944.32 : x
  2. Step 2: Convert to fraction form
    356,920.32/535,470.48 = 251,944.32/x
  3. Step 3: Cross multiply
    356,920.32x = 535,470.48 × 251,944.32
  4. Step 4: Simplify right side
    356,920.32x = 134,908,745,963.67
  5. Step 5: Solve for x
    x = 134,908,745,963.67/356,920.32
  6. Step 6: Final answer
    x = 377,980.01

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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.