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Finding the Fourth Proportional to 136,507.80, 188,497.08 and 85,606.14

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Solution

The fourth proportional to 136,507.80, 188,497.08 and 85,606.14 is: 118,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,507.80 : 188,497.08 = 85,606.14 : x
  2. Step 2: Convert to fraction form
    136,507.80/188,497.08 = 85,606.14/x
  3. Step 3: Cross multiply
    136,507.80x = 188,497.08 × 85,606.14
  4. Step 4: Simplify right side
    136,507.80x = 16,136,507,420.07
  5. Step 5: Solve for x
    x = 16,136,507,420.07/136,507.80
  6. Step 6: Final answer
    x = 118,209.42

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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.