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Finding the Fourth Proportional to 171,663,109.90, 257,494,664.85 and 99,103,698.70

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Solution

The fourth proportional to 171,663,109.90, 257,494,664.85 and 99,103,698.70 is: 148,655,548.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,663,109.90 : 257,494,664.85 = 99,103,698.70 : x
  2. Step 2: Convert to fraction form
    171,663,109.90/257,494,664.85 = 99,103,698.70/x
  3. Step 3: Cross multiply
    171,663,109.90x = 257,494,664.85 × 99,103,698.70
  4. Step 4: Simplify right side
    171,663,109.90x = 25,518,673,682,151,880
  5. Step 5: Solve for x
    x = 25,518,673,682,151,880/171,663,109.90
  6. Step 6: Final answer
    x = 148,655,548.05

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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.