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Finding the Fourth Proportional to 186,839,205.80, 280,258,808.70 and 100,745,763.80

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Solution

The fourth proportional to 186,839,205.80, 280,258,808.70 and 100,745,763.80 is: 151,118,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,839,205.80 : 280,258,808.70 = 100,745,763.80 : x
  2. Step 2: Convert to fraction form
    186,839,205.80/280,258,808.70 = 100,745,763.80/x
  3. Step 3: Cross multiply
    186,839,205.80x = 280,258,808.70 × 100,745,763.80
  4. Step 4: Simplify right side
    186,839,205.80x = 28,234,887,744,159,584
  5. Step 5: Solve for x
    x = 28,234,887,744,159,584/186,839,205.80
  6. Step 6: Final answer
    x = 151,118,645.70

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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.