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Finding the Fourth Proportional to 56,690.99, 85,011.93 and 17,238.93

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Solution

The fourth proportional to 56,690.99, 85,011.93 and 17,238.93 is: 25,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,690.99 : 85,011.93 = 17,238.93 : x
  2. Step 2: Convert to fraction form
    56,690.99/85,011.93 = 17,238.93/x
  3. Step 3: Cross multiply
    56,690.99x = 85,011.93 × 17,238.93
  4. Step 4: Simplify right side
    56,690.99x = 1,465,514,391.64
  5. Step 5: Solve for x
    x = 1,465,514,391.64/56,690.99
  6. Step 6: Final answer
    x = 25,850.92

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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.