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Finding the Fourth Proportional to 98,125.20, 147,036.60 and 73,047.60

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Solution

The fourth proportional to 98,125.20, 147,036.60 and 73,047.60 is: 109,458.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,125.20 : 147,036.60 = 73,047.60 : x
  2. Step 2: Convert to fraction form
    98,125.20/147,036.60 = 73,047.60/x
  3. Step 3: Cross multiply
    98,125.20x = 147,036.60 × 73,047.60
  4. Step 4: Simplify right side
    98,125.20x = 10,740,670,742.16
  5. Step 5: Solve for x
    x = 10,740,670,742.16/98,125.20
  6. Step 6: Final answer
    x = 109,458.84

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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.