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Finding the Fourth Proportional to 171,926,535.80, 257,889,803.70 and 85,833,093.80

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Solution

The fourth proportional to 171,926,535.80, 257,889,803.70 and 85,833,093.80 is: 128,749,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,926,535.80 : 257,889,803.70 = 85,833,093.80 : x
  2. Step 2: Convert to fraction form
    171,926,535.80/257,889,803.70 = 85,833,093.80/x
  3. Step 3: Cross multiply
    171,926,535.80x = 257,889,803.70 × 85,833,093.80
  4. Step 4: Simplify right side
    171,926,535.80x = 22,135,479,711,045,684
  5. Step 5: Solve for x
    x = 22,135,479,711,045,684/171,926,535.80
  6. Step 6: Final answer
    x = 128,749,640.70

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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.