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Finding the Fourth Proportional to 98,218.60, 147,400.80 and 39,096.70

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Solution

The fourth proportional to 98,218.60, 147,400.80 and 39,096.70 is: 58,674.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,218.60 : 147,400.80 = 39,096.70 : x
  2. Step 2: Convert to fraction form
    98,218.60/147,400.80 = 39,096.70/x
  3. Step 3: Cross multiply
    98,218.60x = 147,400.80 × 39,096.70
  4. Step 4: Simplify right side
    98,218.60x = 5,762,884,857.36
  5. Step 5: Solve for x
    x = 5,762,884,857.36/98,218.60
  6. Step 6: Final answer
    x = 58,674.07

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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.