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Finding the Fourth Proportional to 98,651.76, 147,885.28 and 48,039.72

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Solution

The fourth proportional to 98,651.76, 147,885.28 and 48,039.72 is: 72,014.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,651.76 : 147,885.28 = 48,039.72 : x
  2. Step 2: Convert to fraction form
    98,651.76/147,885.28 = 48,039.72/x
  3. Step 3: Cross multiply
    98,651.76x = 147,885.28 × 48,039.72
  4. Step 4: Simplify right side
    98,651.76x = 7,104,367,443.32
  5. Step 5: Solve for x
    x = 7,104,367,443.32/98,651.76
  6. Step 6: Final answer
    x = 72,014.60

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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.