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Finding the Fourth Proportional to 56,570.58, 84,860.12 and 17,130.87

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Solution

The fourth proportional to 56,570.58, 84,860.12 and 17,130.87 is: 25,697.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,570.58 : 84,860.12 = 17,130.87 : x
  2. Step 2: Convert to fraction form
    56,570.58/84,860.12 = 17,130.87/x
  3. Step 3: Cross multiply
    56,570.58x = 84,860.12 × 17,130.87
  4. Step 4: Simplify right side
    56,570.58x = 1,453,727,173.95
  5. Step 5: Solve for x
    x = 1,453,727,173.95/56,570.58
  6. Step 6: Final answer
    x = 25,697.59

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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.