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Finding the Fourth Proportional to 555,382,271.74, 766,433,757.39 and 317,258,978.02

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Solution

The fourth proportional to 555,382,271.74, 766,433,757.39 and 317,258,978.02 is: 437,820,944.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,382,271.74 : 766,433,757.39 = 317,258,978.02 : x
  2. Step 2: Convert to fraction form
    555,382,271.74/766,433,757.39 = 317,258,978.02/x
  3. Step 3: Cross multiply
    555,382,271.74x = 766,433,757.39 × 317,258,978.02
  4. Step 4: Simplify right side
    555,382,271.74x = 243,157,990,589,580,000
  5. Step 5: Solve for x
    x = 243,157,990,589,580,000/555,382,271.74
  6. Step 6: Final answer
    x = 437,820,944.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.