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Finding the Fourth Proportional to 28,814.04, 39,779.04 and 19,909.41

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Solution

The fourth proportional to 28,814.04, 39,779.04 and 19,909.41 is: 27,485.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.04 : 39,779.04 = 19,909.41 : x
  2. Step 2: Convert to fraction form
    28,814.04/39,779.04 = 19,909.41/x
  3. Step 3: Cross multiply
    28,814.04x = 39,779.04 × 19,909.41
  4. Step 4: Simplify right side
    28,814.04x = 791,977,216.77
  5. Step 5: Solve for x
    x = 791,977,216.77/28,814.04
  6. Step 6: Final answer
    x = 27,485.81

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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.