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Finding the Fourth Proportional to 360,061.81, 540,158.33 and 123,428.41

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Solution

The fourth proportional to 360,061.81, 540,158.33 and 123,428.41 is: 185,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,061.81 : 540,158.33 = 123,428.41 : x
  2. Step 2: Convert to fraction form
    360,061.81/540,158.33 = 123,428.41/x
  3. Step 3: Cross multiply
    360,061.81x = 540,158.33 × 123,428.41
  4. Step 4: Simplify right side
    360,061.81x = 66,670,883,820.16
  5. Step 5: Solve for x
    x = 66,670,883,820.16/360,061.81
  6. Step 6: Final answer
    x = 185,165.11

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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.