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Finding the Fourth Proportional to 70,306.97, 105,413.54 and 38,732.18

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Solution

The fourth proportional to 70,306.97, 105,413.54 and 38,732.18 is: 58,072.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,306.97 : 105,413.54 = 38,732.18 : x
  2. Step 2: Convert to fraction form
    70,306.97/105,413.54 = 38,732.18/x
  3. Step 3: Cross multiply
    70,306.97x = 105,413.54 × 38,732.18
  4. Step 4: Simplify right side
    70,306.97x = 4,082,895,484.99
  5. Step 5: Solve for x
    x = 4,082,895,484.99/70,306.97
  6. Step 6: Final answer
    x = 58,072.42

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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.