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Finding the Fourth Proportional to 526,818.88, 726,931.80 and 319,979.62

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Solution

The fourth proportional to 526,818.88, 726,931.80 and 319,979.62 is: 441,524.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,818.88 : 726,931.80 = 319,979.62 : x
  2. Step 2: Convert to fraction form
    526,818.88/726,931.80 = 319,979.62/x
  3. Step 3: Cross multiply
    526,818.88x = 726,931.80 × 319,979.62
  4. Step 4: Simplify right side
    526,818.88x = 232,603,361,129.92
  5. Step 5: Solve for x
    x = 232,603,361,129.92/526,818.88
  6. Step 6: Final answer
    x = 441,524.35

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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.