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Finding the Fourth Proportional to 72,610,303.80, 108,915,455.70 and 63,823,812.60

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Solution

The fourth proportional to 72,610,303.80, 108,915,455.70 and 63,823,812.60 is: 95,735,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,610,303.80 : 108,915,455.70 = 63,823,812.60 : x
  2. Step 2: Convert to fraction form
    72,610,303.80/108,915,455.70 = 63,823,812.60/x
  3. Step 3: Cross multiply
    72,610,303.80x = 108,915,455.70 × 63,823,812.60
  4. Step 4: Simplify right side
    72,610,303.80x = 6,951,399,633,840,402
  5. Step 5: Solve for x
    x = 6,951,399,633,840,402/72,610,303.80
  6. Step 6: Final answer
    x = 95,735,718.90

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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.