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Finding the Fourth Proportional to 58,190.40, 87,415.20 and 55,828.80

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Solution

The fourth proportional to 58,190.40, 87,415.20 and 55,828.80 is: 83,867.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,190.40 : 87,415.20 = 55,828.80 : x
  2. Step 2: Convert to fraction form
    58,190.40/87,415.20 = 55,828.80/x
  3. Step 3: Cross multiply
    58,190.40x = 87,415.20 × 55,828.80
  4. Step 4: Simplify right side
    58,190.40x = 4,880,285,717.76
  5. Step 5: Solve for x
    x = 4,880,285,717.76/58,190.40
  6. Step 6: Final answer
    x = 83,867.54

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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.