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Finding the Fourth Proportional to 70,413.92, 105,582.96 and 30,925.60

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Solution

The fourth proportional to 70,413.92, 105,582.96 and 30,925.60 is: 46,371.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,413.92 : 105,582.96 = 30,925.60 : x
  2. Step 2: Convert to fraction form
    70,413.92/105,582.96 = 30,925.60/x
  3. Step 3: Cross multiply
    70,413.92x = 105,582.96 × 30,925.60
  4. Step 4: Simplify right side
    70,413.92x = 3,265,216,387.78
  5. Step 5: Solve for x
    x = 3,265,216,387.78/70,413.92
  6. Step 6: Final answer
    x = 46,371.75

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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.