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Finding the Fourth Proportional to 119,212,530.30, 178,818,795.45 and 119,212,530.30

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Solution

The fourth proportional to 119,212,530.30, 178,818,795.45 and 119,212,530.30 is: 178,818,795.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,212,530.30 : 178,818,795.45 = 119,212,530.30 : x
  2. Step 2: Convert to fraction form
    119,212,530.30/178,818,795.45 = 119,212,530.30/x
  3. Step 3: Cross multiply
    119,212,530.30x = 178,818,795.45 × 119,212,530.30
  4. Step 4: Simplify right side
    119,212,530.30x = 21,317,441,070,792,624
  5. Step 5: Solve for x
    x = 21,317,441,070,792,624/119,212,530.30
  6. Step 6: Final answer
    x = 178,818,795.45

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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.