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Finding the Fourth Proportional to 99,008.68, 136,623.54 and 56,558.92

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Solution

The fourth proportional to 99,008.68, 136,623.54 and 56,558.92 is: 78,046.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,008.68 : 136,623.54 = 56,558.92 : x
  2. Step 2: Convert to fraction form
    99,008.68/136,623.54 = 56,558.92/x
  3. Step 3: Cross multiply
    99,008.68x = 136,623.54 × 56,558.92
  4. Step 4: Simplify right side
    99,008.68x = 7,727,279,868.98
  5. Step 5: Solve for x
    x = 7,727,279,868.98/99,008.68
  6. Step 6: Final answer
    x = 78,046.49

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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.