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Finding the Fourth Proportional to 137,569.70, 192,728.80 and 137,569.70

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Solution

The fourth proportional to 137,569.70, 192,728.80 and 137,569.70 is: 192,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,569.70 : 192,728.80 = 137,569.70 : x
  2. Step 2: Convert to fraction form
    137,569.70/192,728.80 = 137,569.70/x
  3. Step 3: Cross multiply
    137,569.70x = 192,728.80 × 137,569.70
  4. Step 4: Simplify right side
    137,569.70x = 26,513,643,197.36
  5. Step 5: Solve for x
    x = 26,513,643,197.36/137,569.70
  6. Step 6: Final answer
    x = 192,728.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.