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Finding the Fourth Proportional to 139,062.30, 208,593.45 and 139,062.30

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Solution

The fourth proportional to 139,062.30, 208,593.45 and 139,062.30 is: 208,593.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,062.30 : 208,593.45 = 139,062.30 : x
  2. Step 2: Convert to fraction form
    139,062.30/208,593.45 = 139,062.30/x
  3. Step 3: Cross multiply
    139,062.30x = 208,593.45 × 139,062.30
  4. Step 4: Simplify right side
    139,062.30x = 29,007,484,921.94
  5. Step 5: Solve for x
    x = 29,007,484,921.94/139,062.30
  6. Step 6: Final answer
    x = 208,593.45

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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.