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Finding the Fourth Proportional to 14,868.65, 20,518.76 and 8,154.32

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Solution

The fourth proportional to 14,868.65, 20,518.76 and 8,154.32 is: 11,252.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,868.65 : 20,518.76 = 8,154.32 : x
  2. Step 2: Convert to fraction form
    14,868.65/20,518.76 = 8,154.32/x
  3. Step 3: Cross multiply
    14,868.65x = 20,518.76 × 8,154.32
  4. Step 4: Simplify right side
    14,868.65x = 167,316,494.27
  5. Step 5: Solve for x
    x = 167,316,494.27/14,868.65
  6. Step 6: Final answer
    x = 11,252.98

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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.