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Finding the Fourth Proportional to 356,657.28, 535,055.86 and 132,019.62

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Solution

The fourth proportional to 356,657.28, 535,055.86 and 132,019.62 is: 198,055.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,657.28 : 535,055.86 = 132,019.62 : x
  2. Step 2: Convert to fraction form
    356,657.28/535,055.86 = 132,019.62/x
  3. Step 3: Cross multiply
    356,657.28x = 535,055.86 × 132,019.62
  4. Step 4: Simplify right side
    356,657.28x = 70,637,871,315.97
  5. Step 5: Solve for x
    x = 70,637,871,315.97/356,657.28
  6. Step 6: Final answer
    x = 198,055.32

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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.