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Finding the Fourth Proportional to 19,305.86, 28,956.05 and 7,465.22

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Solution

The fourth proportional to 19,305.86, 28,956.05 and 7,465.22 is: 11,196.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305.86 : 28,956.05 = 7,465.22 : x
  2. Step 2: Convert to fraction form
    19,305.86/28,956.05 = 7,465.22/x
  3. Step 3: Cross multiply
    19,305.86x = 28,956.05 × 7,465.22
  4. Step 4: Simplify right side
    19,305.86x = 216,163,101.47
  5. Step 5: Solve for x
    x = 216,163,101.47/19,305.86
  6. Step 6: Final answer
    x = 11,196.76

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1.5x scale

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.