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Finding the Fourth Proportional to 627,660,346.40, 939,698,929.20 and 627,660,346.40

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Solution

The fourth proportional to 627,660,346.40, 939,698,929.20 and 627,660,346.40 is: 939,698,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,660,346.40 : 939,698,929.20 = 627,660,346.40 : x
  2. Step 2: Convert to fraction form
    627,660,346.40/939,698,929.20 = 627,660,346.40/x
  3. Step 3: Cross multiply
    627,660,346.40x = 939,698,929.20 × 627,660,346.40
  4. Step 4: Simplify right side
    627,660,346.40x = 589,811,755,413,381,120
  5. Step 5: Solve for x
    x = 589,811,755,413,381,120/627,660,346.40
  6. Step 6: Final answer
    x = 939,698,929.20

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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.