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Finding the Fourth Proportional to 115,898.70, 173,848.05 and 74,426.70

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Solution

The fourth proportional to 115,898.70, 173,848.05 and 74,426.70 is: 111,640.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,898.70 : 173,848.05 = 74,426.70 : x
  2. Step 2: Convert to fraction form
    115,898.70/173,848.05 = 74,426.70/x
  3. Step 3: Cross multiply
    115,898.70x = 173,848.05 × 74,426.70
  4. Step 4: Simplify right side
    115,898.70x = 12,938,936,662.94
  5. Step 5: Solve for x
    x = 12,938,936,662.94/115,898.70
  6. Step 6: Final answer
    x = 111,640.05

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1.5x scale

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.