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Finding the Fourth Proportional to 56,699.88, 85,021.88 and 19,246.28

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Solution

The fourth proportional to 56,699.88, 85,021.88 and 19,246.28 is: 28,859.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,699.88 : 85,021.88 = 19,246.28 : x
  2. Step 2: Convert to fraction form
    56,699.88/85,021.88 = 19,246.28/x
  3. Step 3: Cross multiply
    56,699.88x = 85,021.88 × 19,246.28
  4. Step 4: Simplify right side
    56,699.88x = 1,636,354,908.61
  5. Step 5: Solve for x
    x = 1,636,354,908.61/56,699.88
  6. Step 6: Final answer
    x = 28,859.94

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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.