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Finding the Fourth Proportional to 53,307.68, 79,934.52 and 31,126.64

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Solution

The fourth proportional to 53,307.68, 79,934.52 and 31,126.64 is: 46,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,307.68 : 79,934.52 = 31,126.64 : x
  2. Step 2: Convert to fraction form
    53,307.68/79,934.52 = 31,126.64/x
  3. Step 3: Cross multiply
    53,307.68x = 79,934.52 × 31,126.64
  4. Step 4: Simplify right side
    53,307.68x = 2,488,093,027.61
  5. Step 5: Solve for x
    x = 2,488,093,027.61/53,307.68
  6. Step 6: Final answer
    x = 46,674.19

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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.