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Finding the Fourth Proportional to 14,607.76, 20,162.84 and 8,641.51

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Solution

The fourth proportional to 14,607.76, 20,162.84 and 8,641.51 is: 11,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,607.76 : 20,162.84 = 8,641.51 : x
  2. Step 2: Convert to fraction form
    14,607.76/20,162.84 = 8,641.51/x
  3. Step 3: Cross multiply
    14,607.76x = 20,162.84 × 8,641.51
  4. Step 4: Simplify right side
    14,607.76x = 174,237,282.67
  5. Step 5: Solve for x
    x = 174,237,282.67/14,607.76
  6. Step 6: Final answer
    x = 11,927.72

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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.