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Finding the Fourth Proportional to 58,664.40, 88,004.70 and 21,215.40

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Solution

The fourth proportional to 58,664.40, 88,004.70 and 21,215.40 is: 31,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,664.40 : 88,004.70 = 21,215.40 : x
  2. Step 2: Convert to fraction form
    58,664.40/88,004.70 = 21,215.40/x
  3. Step 3: Cross multiply
    58,664.40x = 88,004.70 × 21,215.40
  4. Step 4: Simplify right side
    58,664.40x = 1,867,054,912.38
  5. Step 5: Solve for x
    x = 1,867,054,912.38/58,664.40
  6. Step 6: Final answer
    x = 31,826.03

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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.