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Finding the Fourth Proportional to 72,424,906.60, 108,637,359.90 and 72,424,906.60

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Solution

The fourth proportional to 72,424,906.60, 108,637,359.90 and 72,424,906.60 is: 108,637,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,424,906.60 : 108,637,359.90 = 72,424,906.60 : x
  2. Step 2: Convert to fraction form
    72,424,906.60/108,637,359.90 = 72,424,906.60/x
  3. Step 3: Cross multiply
    72,424,906.60x = 108,637,359.90 × 72,424,906.60
  4. Step 4: Simplify right side
    72,424,906.60x = 7,868,050,644,028,085
  5. Step 5: Solve for x
    x = 7,868,050,644,028,085/72,424,906.60
  6. Step 6: Final answer
    x = 108,637,359.90

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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.