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Finding the Fourth Proportional to 113,413.72, 156,445.68 and 70,898.44

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Solution

The fourth proportional to 113,413.72, 156,445.68 and 70,898.44 is: 97,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,413.72 : 156,445.68 = 70,898.44 : x
  2. Step 2: Convert to fraction form
    113,413.72/156,445.68 = 70,898.44/x
  3. Step 3: Cross multiply
    113,413.72x = 156,445.68 × 70,898.44
  4. Step 4: Simplify right side
    113,413.72x = 11,091,754,426.03
  5. Step 5: Solve for x
    x = 11,091,754,426.03/113,413.72
  6. Step 6: Final answer
    x = 97,799.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.