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Finding the Fourth Proportional to 68,153.51, 102,195.90 and 39,699.63

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Solution

The fourth proportional to 68,153.51, 102,195.90 and 39,699.63 is: 59,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,153.51 : 102,195.90 = 39,699.63 : x
  2. Step 2: Convert to fraction form
    68,153.51/102,195.90 = 39,699.63/x
  3. Step 3: Cross multiply
    68,153.51x = 102,195.90 × 39,699.63
  4. Step 4: Simplify right side
    68,153.51x = 4,057,139,417.52
  5. Step 5: Solve for x
    x = 4,057,139,417.52/68,153.51
  6. Step 6: Final answer
    x = 59,529.43

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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.