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Finding the Fourth Proportional to 173,811.40, 260,571.30 and 90,705.40

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Solution

The fourth proportional to 173,811.40, 260,571.30 and 90,705.40 is: 135,982.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,811.40 : 260,571.30 = 90,705.40 : x
  2. Step 2: Convert to fraction form
    173,811.40/260,571.30 = 90,705.40/x
  3. Step 3: Cross multiply
    173,811.40x = 260,571.30 × 90,705.40
  4. Step 4: Simplify right side
    173,811.40x = 23,635,223,995.02
  5. Step 5: Solve for x
    x = 23,635,223,995.02/173,811.40
  6. Step 6: Final answer
    x = 135,982.01

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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.