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Finding the Fourth Proportional to 98,220.80, 147,388.80 and 35,897.60

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Solution

The fourth proportional to 98,220.80, 147,388.80 and 35,897.60 is: 53,867.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,220.80 : 147,388.80 = 35,897.60 : x
  2. Step 2: Convert to fraction form
    98,220.80/147,388.80 = 35,897.60/x
  3. Step 3: Cross multiply
    98,220.80x = 147,388.80 × 35,897.60
  4. Step 4: Simplify right side
    98,220.80x = 5,290,904,186.88
  5. Step 5: Solve for x
    x = 5,290,904,186.88/98,220.80
  6. Step 6: Final answer
    x = 53,867.45

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1.5x scale

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.