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Finding the Fourth Proportional to 551,124,003.80, 826,686,005.70 and 162,912,258.20

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Solution

The fourth proportional to 551,124,003.80, 826,686,005.70 and 162,912,258.20 is: 244,368,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,124,003.80 : 826,686,005.70 = 162,912,258.20 : x
  2. Step 2: Convert to fraction form
    551,124,003.80/826,686,005.70 = 162,912,258.20/x
  3. Step 3: Cross multiply
    551,124,003.80x = 826,686,005.70 × 162,912,258.20
  4. Step 4: Simplify right side
    551,124,003.80x = 134,677,284,010,925,072
  5. Step 5: Solve for x
    x = 134,677,284,010,925,072/551,124,003.80
  6. Step 6: Final answer
    x = 244,368,387.30

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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.