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Finding the Fourth Proportional to 98,994.64, 148,479.90 and 28,874.02

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Solution

The fourth proportional to 98,994.64, 148,479.90 and 28,874.02 is: 43,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,994.64 : 148,479.90 = 28,874.02 : x
  2. Step 2: Convert to fraction form
    98,994.64/148,479.90 = 28,874.02/x
  3. Step 3: Cross multiply
    98,994.64x = 148,479.90 × 28,874.02
  4. Step 4: Simplify right side
    98,994.64x = 4,287,211,602.20
  5. Step 5: Solve for x
    x = 4,287,211,602.20/98,994.64
  6. Step 6: Final answer
    x = 43,307.51

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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.