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Finding the Fourth Proportional to 1,207,239,934.80, 1,810,859,902.20 and 1,207,239,934.80

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Solution

The fourth proportional to 1,207,239,934.80, 1,810,859,902.20 and 1,207,239,934.80 is: 1,810,859,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,239,934.80 : 1,810,859,902.20 = 1,207,239,934.80 : x
  2. Step 2: Convert to fraction form
    1,207,239,934.80/1,810,859,902.20 = 1,207,239,934.80/x
  3. Step 3: Cross multiply
    1,207,239,934.80x = 1,810,859,902.20 × 1,207,239,934.80
  4. Step 4: Simplify right side
    1,207,239,934.80x = 2,186,142,390,263,862,272
  5. Step 5: Solve for x
    x = 2,186,142,390,263,862,272/1,207,239,934.80
  6. Step 6: Final answer
    x = 1,810,859,902.20

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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.