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Finding the Fourth Proportional to 571,962,421.80, 857,943,632.70 and 162,965,428.20

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Solution

The fourth proportional to 571,962,421.80, 857,943,632.70 and 162,965,428.20 is: 244,448,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,962,421.80 : 857,943,632.70 = 162,965,428.20 : x
  2. Step 2: Convert to fraction form
    571,962,421.80/857,943,632.70 = 162,965,428.20/x
  3. Step 3: Cross multiply
    571,962,421.80x = 857,943,632.70 × 162,965,428.20
  4. Step 4: Simplify right side
    571,962,421.80x = 139,815,151,474,419,024
  5. Step 5: Solve for x
    x = 139,815,151,474,419,024/571,962,421.80
  6. Step 6: Final answer
    x = 244,448,142.30

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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.