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Finding the Fourth Proportional to 66,562,806.60, 99,844,209.90 and 48,281,236.20

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Solution

The fourth proportional to 66,562,806.60, 99,844,209.90 and 48,281,236.20 is: 72,421,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,562,806.60 : 99,844,209.90 = 48,281,236.20 : x
  2. Step 2: Convert to fraction form
    66,562,806.60/99,844,209.90 = 48,281,236.20/x
  3. Step 3: Cross multiply
    66,562,806.60x = 99,844,209.90 × 48,281,236.20
  4. Step 4: Simplify right side
    66,562,806.60x = 4,820,601,881,384,279
  5. Step 5: Solve for x
    x = 4,820,601,881,384,279/66,562,806.60
  6. Step 6: Final answer
    x = 72,421,854.30

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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.