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Finding the Fourth Proportional to 108,785.70, 163,615.95 and 97,413.30

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Solution

The fourth proportional to 108,785.70, 163,615.95 and 97,413.30 is: 146,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,785.70 : 163,615.95 = 97,413.30 : x
  2. Step 2: Convert to fraction form
    108,785.70/163,615.95 = 97,413.30/x
  3. Step 3: Cross multiply
    108,785.70x = 163,615.95 × 97,413.30
  4. Step 4: Simplify right side
    108,785.70x = 15,938,369,622.14
  5. Step 5: Solve for x
    x = 15,938,369,622.14/108,785.70
  6. Step 6: Final answer
    x = 146,511.62

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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.