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Finding the Fourth Proportional to 7,085,145.90, 10,611,972.45 and 7,085,145.90

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Solution

The fourth proportional to 7,085,145.90, 10,611,972.45 and 7,085,145.90 is: 10,611,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085,145.90 : 10,611,972.45 = 7,085,145.90 : x
  2. Step 2: Convert to fraction form
    7,085,145.90/10,611,972.45 = 7,085,145.90/x
  3. Step 3: Cross multiply
    7,085,145.90x = 10,611,972.45 × 7,085,145.90
  4. Step 4: Simplify right side
    7,085,145.90x = 75,187,373,095,030.45
  5. Step 5: Solve for x
    x = 75,187,373,095,030.45/7,085,145.90
  6. Step 6: Final answer
    x = 10,611,972.45

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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.