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Finding the Fourth Proportional to 99,173.76, 136,813.98 and 58,864.64

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Solution

The fourth proportional to 99,173.76, 136,813.98 and 58,864.64 is: 81,206.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,173.76 : 136,813.98 = 58,864.64 : x
  2. Step 2: Convert to fraction form
    99,173.76/136,813.98 = 58,864.64/x
  3. Step 3: Cross multiply
    99,173.76x = 136,813.98 × 58,864.64
  4. Step 4: Simplify right side
    99,173.76x = 8,053,505,679.67
  5. Step 5: Solve for x
    x = 8,053,505,679.67/99,173.76
  6. Step 6: Final answer
    x = 81,206.01

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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.