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Finding the Fourth Proportional to 98,010,397.80, 147,015,596.70 and 65,677,789.80

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Solution

The fourth proportional to 98,010,397.80, 147,015,596.70 and 65,677,789.80 is: 98,516,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,010,397.80 : 147,015,596.70 = 65,677,789.80 : x
  2. Step 2: Convert to fraction form
    98,010,397.80/147,015,596.70 = 65,677,789.80/x
  3. Step 3: Cross multiply
    98,010,397.80x = 147,015,596.70 × 65,677,789.80
  4. Step 4: Simplify right side
    98,010,397.80x = 9,655,659,457,384,172
  5. Step 5: Solve for x
    x = 9,655,659,457,384,172/98,010,397.80
  6. Step 6: Final answer
    x = 98,516,684.70

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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.