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Finding the Fourth Proportional to 207,651.47, 286,683.50 and 136,156.21

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Solution

The fourth proportional to 207,651.47, 286,683.50 and 136,156.21 is: 187,977.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,651.47 : 286,683.50 = 136,156.21 : x
  2. Step 2: Convert to fraction form
    207,651.47/286,683.50 = 136,156.21/x
  3. Step 3: Cross multiply
    207,651.47x = 286,683.50 × 136,156.21
  4. Step 4: Simplify right side
    207,651.47x = 39,033,738,453.22
  5. Step 5: Solve for x
    x = 39,033,738,453.22/207,651.47
  6. Step 6: Final answer
    x = 187,977.19

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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.