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Finding the Fourth Proportional to 98,423.95, 147,413.94 and 45,722.53

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Solution

The fourth proportional to 98,423.95, 147,413.94 and 45,722.53 is: 68,480.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,423.95 : 147,413.94 = 45,722.53 : x
  2. Step 2: Convert to fraction form
    98,423.95/147,413.94 = 45,722.53/x
  3. Step 3: Cross multiply
    98,423.95x = 147,413.94 × 45,722.53
  4. Step 4: Simplify right side
    98,423.95x = 6,740,138,294.07
  5. Step 5: Solve for x
    x = 6,740,138,294.07/98,423.95
  6. Step 6: Final answer
    x = 68,480.67

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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.