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Finding the Fourth Proportional to 139,616.58, 192,608.42 and 94,280.06

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Solution

The fourth proportional to 139,616.58, 192,608.42 and 94,280.06 is: 130,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,616.58 : 192,608.42 = 94,280.06 : x
  2. Step 2: Convert to fraction form
    139,616.58/192,608.42 = 94,280.06/x
  3. Step 3: Cross multiply
    139,616.58x = 192,608.42 × 94,280.06
  4. Step 4: Simplify right side
    139,616.58x = 18,159,133,394.11
  5. Step 5: Solve for x
    x = 18,159,133,394.11/139,616.58
  6. Step 6: Final answer
    x = 130,064.30

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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.