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Finding the Fourth Proportional to 65,263,081.80, 97,894,622.70 and 19,818,971.40

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Solution

The fourth proportional to 65,263,081.80, 97,894,622.70 and 19,818,971.40 is: 29,728,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,263,081.80 : 97,894,622.70 = 19,818,971.40 : x
  2. Step 2: Convert to fraction form
    65,263,081.80/97,894,622.70 = 19,818,971.40/x
  3. Step 3: Cross multiply
    65,263,081.80x = 97,894,622.70 × 19,818,971.40
  4. Step 4: Simplify right side
    65,263,081.80x = 1,940,170,727,505,090.75
  5. Step 5: Solve for x
    x = 1,940,170,727,505,090.75/65,263,081.80
  6. Step 6: Final answer
    x = 29,728,457.10

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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.