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Finding the Fourth Proportional to 25,726.52, 35,505.76 and 15,655.99

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Solution

The fourth proportional to 25,726.52, 35,505.76 and 15,655.99 is: 21,607.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,726.52 : 35,505.76 = 15,655.99 : x
  2. Step 2: Convert to fraction form
    25,726.52/35,505.76 = 15,655.99/x
  3. Step 3: Cross multiply
    25,726.52x = 35,505.76 × 15,655.99
  4. Step 4: Simplify right side
    25,726.52x = 555,877,823.50
  5. Step 5: Solve for x
    x = 555,877,823.50/25,726.52
  6. Step 6: Final answer
    x = 21,607.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.