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Finding the Fourth Proportional to 72,405,202.30, 108,607,803.45 and 72,405,202.30

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Solution

The fourth proportional to 72,405,202.30, 108,607,803.45 and 72,405,202.30 is: 108,607,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,405,202.30 : 108,607,803.45 = 72,405,202.30 : x
  2. Step 2: Convert to fraction form
    72,405,202.30/108,607,803.45 = 72,405,202.30/x
  3. Step 3: Cross multiply
    72,405,202.30x = 108,607,803.45 × 72,405,202.30
  4. Step 4: Simplify right side
    72,405,202.30x = 7,863,769,980,155,888
  5. Step 5: Solve for x
    x = 7,863,769,980,155,888/72,405,202.30
  6. Step 6: Final answer
    x = 108,607,803.45

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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.