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Finding the Fourth Proportional to 647,005.96, 892,856.16 and 360,519.96

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Solution

The fourth proportional to 647,005.96, 892,856.16 and 360,519.96 is: 497,510.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,005.96 : 892,856.16 = 360,519.96 : x
  2. Step 2: Convert to fraction form
    647,005.96/892,856.16 = 360,519.96/x
  3. Step 3: Cross multiply
    647,005.96x = 892,856.16 × 360,519.96
  4. Step 4: Simplify right side
    647,005.96x = 321,892,467,088.95
  5. Step 5: Solve for x
    x = 321,892,467,088.95/647,005.96
  6. Step 6: Final answer
    x = 497,510.82

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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.