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Finding the Fourth Proportional to 763,960,219.05, 1,145,940,328.58 and 763,960,219.05

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Solution

The fourth proportional to 763,960,219.05, 1,145,940,328.58 and 763,960,219.05 is: 1,145,940,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,960,219.05 : 1,145,940,328.58 = 763,960,219.05 : x
  2. Step 2: Convert to fraction form
    763,960,219.05/1,145,940,328.58 = 763,960,219.05/x
  3. Step 3: Cross multiply
    763,960,219.05x = 1,145,940,328.58 × 763,960,219.05
  4. Step 4: Simplify right side
    763,960,219.05x = 875,452,824,436,385,920
  5. Step 5: Solve for x
    x = 875,452,824,436,385,920/763,960,219.05
  6. Step 6: Final answer
    x = 1,145,940,328.58

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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.