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Finding the Fourth Proportional to 626,757,212.40, 878,367,090 and 626,757,212.40

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Solution

The fourth proportional to 626,757,212.40, 878,367,090 and 626,757,212.40 is: 878,367,090

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,757,212.40 : 878,367,090 = 626,757,212.40 : x
  2. Step 2: Convert to fraction form
    626,757,212.40/878,367,090 = 626,757,212.40/x
  3. Step 3: Cross multiply
    626,757,212.40x = 878,367,090 × 626,757,212.40
  4. Step 4: Simplify right side
    626,757,212.40x = 550,522,908,792,299,904
  5. Step 5: Solve for x
    x = 550,522,908,792,299,904/626,757,212.40
  6. Step 6: Final answer
    x = 878,367,090

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.