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Finding the Fourth Proportional to 65,688.46, 98,518.11 and 18,944.98

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Solution

The fourth proportional to 65,688.46, 98,518.11 and 18,944.98 is: 28,413.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,688.46 : 98,518.11 = 18,944.98 : x
  2. Step 2: Convert to fraction form
    65,688.46/98,518.11 = 18,944.98/x
  3. Step 3: Cross multiply
    65,688.46x = 98,518.11 × 18,944.98
  4. Step 4: Simplify right side
    65,688.46x = 1,866,423,623.59
  5. Step 5: Solve for x
    x = 1,866,423,623.59/65,688.46
  6. Step 6: Final answer
    x = 28,413.27

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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.