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Finding the Fourth Proportional to 491,036.32, 677,650.32 and 276,186.40

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Solution

The fourth proportional to 491,036.32, 677,650.32 and 276,186.40 is: 381,148.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,036.32 : 677,650.32 = 276,186.40 : x
  2. Step 2: Convert to fraction form
    491,036.32/677,650.32 = 276,186.40/x
  3. Step 3: Cross multiply
    491,036.32x = 677,650.32 × 276,186.40
  4. Step 4: Simplify right side
    491,036.32x = 187,157,802,339.65
  5. Step 5: Solve for x
    x = 187,157,802,339.65/491,036.32
  6. Step 6: Final answer
    x = 381,148.59

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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.