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Finding the Fourth Proportional to 23,779.80, 32,814.72 and 13,168.80

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Solution

The fourth proportional to 23,779.80, 32,814.72 and 13,168.80 is: 18,172.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,779.80 : 32,814.72 = 13,168.80 : x
  2. Step 2: Convert to fraction form
    23,779.80/32,814.72 = 13,168.80/x
  3. Step 3: Cross multiply
    23,779.80x = 32,814.72 × 13,168.80
  4. Step 4: Simplify right side
    23,779.80x = 432,130,484.74
  5. Step 5: Solve for x
    x = 432,130,484.74/23,779.80
  6. Step 6: Final answer
    x = 18,172.17

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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.