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Finding the Fourth Proportional to 152,765.06, 210,841.11 and 89,102.85

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Solution

The fourth proportional to 152,765.06, 210,841.11 and 89,102.85 is: 122,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,765.06 : 210,841.11 = 89,102.85 : x
  2. Step 2: Convert to fraction form
    152,765.06/210,841.11 = 89,102.85/x
  3. Step 3: Cross multiply
    152,765.06x = 210,841.11 × 89,102.85
  4. Step 4: Simplify right side
    152,765.06x = 18,786,543,007.51
  5. Step 5: Solve for x
    x = 18,786,543,007.51/152,765.06
  6. Step 6: Final answer
    x = 122,976.70

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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.