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Finding the Fourth Proportional to 65,791,835.30, 98,697,084.15 and 20,348,891.30

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Solution

The fourth proportional to 65,791,835.30, 98,697,084.15 and 20,348,891.30 is: 30,526,223.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,791,835.30 : 98,697,084.15 = 20,348,891.30 : x
  2. Step 2: Convert to fraction form
    65,791,835.30/98,697,084.15 = 20,348,891.30/x
  3. Step 3: Cross multiply
    65,791,835.30x = 98,697,084.15 × 20,348,891.30
  4. Step 4: Simplify right side
    65,791,835.30x = 2,008,376,236,995,303
  5. Step 5: Solve for x
    x = 2,008,376,236,995,303/65,791,835.30
  6. Step 6: Final answer
    x = 30,526,223.02

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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.