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Finding the Fourth Proportional to 66,413.70, 99,620.55 and 59,852.70

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Solution

The fourth proportional to 66,413.70, 99,620.55 and 59,852.70 is: 89,779.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,413.70 : 99,620.55 = 59,852.70 : x
  2. Step 2: Convert to fraction form
    66,413.70/99,620.55 = 59,852.70/x
  3. Step 3: Cross multiply
    66,413.70x = 99,620.55 × 59,852.70
  4. Step 4: Simplify right side
    66,413.70x = 5,962,558,892.99
  5. Step 5: Solve for x
    x = 5,962,558,892.99/66,413.70
  6. Step 6: Final answer
    x = 89,779.05

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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.