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Finding the Fourth Proportional to 863,945,525.31, 1,191,805,593.87 and 524,763,742.09

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Solution

The fourth proportional to 863,945,525.31, 1,191,805,593.87 and 524,763,742.09 is: 723,907,173.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,945,525.31 : 1,191,805,593.87 = 524,763,742.09 : x
  2. Step 2: Convert to fraction form
    863,945,525.31/1,191,805,593.87 = 524,763,742.09/x
  3. Step 3: Cross multiply
    863,945,525.31x = 1,191,805,593.87 × 524,763,742.09
  4. Step 4: Simplify right side
    863,945,525.31x = 625,416,363,280,036,352
  5. Step 5: Solve for x
    x = 625,416,363,280,036,352/863,945,525.31
  6. Step 6: Final answer
    x = 723,907,173.49

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1.5x scale

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.