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Finding the Fourth Proportional to 99,235.49, 136,914.80 and 56,208.14

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Solution

The fourth proportional to 99,235.49, 136,914.80 and 56,208.14 is: 77,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,235.49 : 136,914.80 = 56,208.14 : x
  2. Step 2: Convert to fraction form
    99,235.49/136,914.80 = 56,208.14/x
  3. Step 3: Cross multiply
    99,235.49x = 136,914.80 × 56,208.14
  4. Step 4: Simplify right side
    99,235.49x = 7,695,726,722.52
  5. Step 5: Solve for x
    x = 7,695,726,722.52/99,235.49
  6. Step 6: Final answer
    x = 77,550.15

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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.