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Finding the Fourth Proportional to 98,809.51, 148,107.98 and 42,676.02

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Solution

The fourth proportional to 98,809.51, 148,107.98 and 42,676.02 is: 63,968.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,809.51 : 148,107.98 = 42,676.02 : x
  2. Step 2: Convert to fraction form
    98,809.51/148,107.98 = 42,676.02/x
  3. Step 3: Cross multiply
    98,809.51x = 148,107.98 × 42,676.02
  4. Step 4: Simplify right side
    98,809.51x = 6,320,658,162.72
  5. Step 5: Solve for x
    x = 6,320,658,162.72/98,809.51
  6. Step 6: Final answer
    x = 63,968.12

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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.