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Finding the Fourth Proportional to 171,102,402.60, 256,653,603.90 and 130,791,618.60

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Solution

The fourth proportional to 171,102,402.60, 256,653,603.90 and 130,791,618.60 is: 196,187,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,102,402.60 : 256,653,603.90 = 130,791,618.60 : x
  2. Step 2: Convert to fraction form
    171,102,402.60/256,653,603.90 = 130,791,618.60/x
  3. Step 3: Cross multiply
    171,102,402.60x = 256,653,603.90 × 130,791,618.60
  4. Step 4: Simplify right side
    171,102,402.60x = 33,568,140,273,604,272
  5. Step 5: Solve for x
    x = 33,568,140,273,604,272/171,102,402.60
  6. Step 6: Final answer
    x = 196,187,427.90

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1.5x scale

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.