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Finding the Fourth Proportional to 70,366.57, 105,549.17 and 30,413.81

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Solution

The fourth proportional to 70,366.57, 105,549.17 and 30,413.81 is: 45,620.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,366.57 : 105,549.17 = 30,413.81 : x
  2. Step 2: Convert to fraction form
    70,366.57/105,549.17 = 30,413.81/x
  3. Step 3: Cross multiply
    70,366.57x = 105,549.17 × 30,413.81
  4. Step 4: Simplify right side
    70,366.57x = 3,210,152,402.04
  5. Step 5: Solve for x
    x = 3,210,152,402.04/70,366.57
  6. Step 6: Final answer
    x = 45,620.42

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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.