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Finding the Fourth Proportional to 36,978.95, 55,507.93 and 15,929.44

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Solution

The fourth proportional to 36,978.95, 55,507.93 and 15,929.44 is: 23,911.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,978.95 : 55,507.93 = 15,929.44 : x
  2. Step 2: Convert to fraction form
    36,978.95/55,507.93 = 15,929.44/x
  3. Step 3: Cross multiply
    36,978.95x = 55,507.93 × 15,929.44
  4. Step 4: Simplify right side
    36,978.95x = 884,210,061.87
  5. Step 5: Solve for x
    x = 884,210,061.87/36,978.95
  6. Step 6: Final answer
    x = 23,911.17

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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.