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Finding the Fourth Proportional to 119,048.91, 164,290.70 and 65,335.85

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Solution

The fourth proportional to 119,048.91, 164,290.70 and 65,335.85 is: 90,165.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,048.91 : 164,290.70 = 65,335.85 : x
  2. Step 2: Convert to fraction form
    119,048.91/164,290.70 = 65,335.85/x
  3. Step 3: Cross multiply
    119,048.91x = 164,290.70 × 65,335.85
  4. Step 4: Simplify right side
    119,048.91x = 10,734,071,383.46
  5. Step 5: Solve for x
    x = 10,734,071,383.46/119,048.91
  6. Step 6: Final answer
    x = 90,165.22

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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.