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Finding the Fourth Proportional to 98,413.60, 147,693.30 and 39,291.70

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Solution

The fourth proportional to 98,413.60, 147,693.30 and 39,291.70 is: 58,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,413.60 : 147,693.30 = 39,291.70 : x
  2. Step 2: Convert to fraction form
    98,413.60/147,693.30 = 39,291.70/x
  3. Step 3: Cross multiply
    98,413.60x = 147,693.30 × 39,291.70
  4. Step 4: Simplify right side
    98,413.60x = 5,803,120,835.61
  5. Step 5: Solve for x
    x = 5,803,120,835.61/98,413.60
  6. Step 6: Final answer
    x = 58,966.66

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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.