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Finding the Fourth Proportional to 128,304,111.70, 192,456,167.55 and 128,304,111.70

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Solution

The fourth proportional to 128,304,111.70, 192,456,167.55 and 128,304,111.70 is: 192,456,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,111.70 : 192,456,167.55 = 128,304,111.70 : x
  2. Step 2: Convert to fraction form
    128,304,111.70/192,456,167.55 = 128,304,111.70/x
  3. Step 3: Cross multiply
    128,304,111.70x = 192,456,167.55 × 128,304,111.70
  4. Step 4: Simplify right side
    128,304,111.70x = 24,692,917,618,689,116
  5. Step 5: Solve for x
    x = 24,692,917,618,689,116/128,304,111.70
  6. Step 6: Final answer
    x = 192,456,167.55

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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.