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Finding the Fourth Proportional to 34,779.40, 52,125.90 and 31,064.20

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Solution

The fourth proportional to 34,779.40, 52,125.90 and 31,064.20 is: 46,557.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,779.40 : 52,125.90 = 31,064.20 : x
  2. Step 2: Convert to fraction form
    34,779.40/52,125.90 = 31,064.20/x
  3. Step 3: Cross multiply
    34,779.40x = 52,125.90 × 31,064.20
  4. Step 4: Simplify right side
    34,779.40x = 1,619,249,382.78
  5. Step 5: Solve for x
    x = 1,619,249,382.78/34,779.40
  6. Step 6: Final answer
    x = 46,557.71

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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.