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Finding the Fourth Proportional to 15,985.53, 22,053.03 and 15,244.38

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Solution

The fourth proportional to 15,985.53, 22,053.03 and 15,244.38 is: 21,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,985.53 : 22,053.03 = 15,244.38 : x
  2. Step 2: Convert to fraction form
    15,985.53/22,053.03 = 15,244.38/x
  3. Step 3: Cross multiply
    15,985.53x = 22,053.03 × 15,244.38
  4. Step 4: Simplify right side
    15,985.53x = 336,184,582.98
  5. Step 5: Solve for x
    x = 336,184,582.98/15,985.53
  6. Step 6: Final answer
    x = 21,030.56

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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.