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Finding the Fourth Proportional to 98,795.70, 148,208.04 and 28,665.90

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Solution

The fourth proportional to 98,795.70, 148,208.04 and 28,665.90 is: 43,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,795.70 : 148,208.04 = 28,665.90 : x
  2. Step 2: Convert to fraction form
    98,795.70/148,208.04 = 28,665.90/x
  3. Step 3: Cross multiply
    98,795.70x = 148,208.04 × 28,665.90
  4. Step 4: Simplify right side
    98,795.70x = 4,248,516,853.84
  5. Step 5: Solve for x
    x = 4,248,516,853.84/98,795.70
  6. Step 6: Final answer
    x = 43,003.05

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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.