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Finding the Fourth Proportional to 139,809.80, 192,957.65 and 101,173.07

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Solution

The fourth proportional to 139,809.80, 192,957.65 and 101,173.07 is: 139,633.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,809.80 : 192,957.65 = 101,173.07 : x
  2. Step 2: Convert to fraction form
    139,809.80/192,957.65 = 101,173.07/x
  3. Step 3: Cross multiply
    139,809.80x = 192,957.65 × 101,173.07
  4. Step 4: Simplify right side
    139,809.80x = 19,522,117,830.49
  5. Step 5: Solve for x
    x = 19,522,117,830.49/139,809.80
  6. Step 6: Final answer
    x = 139,633.40

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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.