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Finding the Fourth Proportional to 42,574.82, 63,831.02 and 14,487.33

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Solution

The fourth proportional to 42,574.82, 63,831.02 and 14,487.33 is: 21,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,574.82 : 63,831.02 = 14,487.33 : x
  2. Step 2: Convert to fraction form
    42,574.82/63,831.02 = 14,487.33/x
  3. Step 3: Cross multiply
    42,574.82x = 63,831.02 × 14,487.33
  4. Step 4: Simplify right side
    42,574.82x = 924,740,731.82
  5. Step 5: Solve for x
    x = 924,740,731.82/42,574.82
  6. Step 6: Final answer
    x = 21,720.37

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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.