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Finding the Fourth Proportional to 99,136.40, 136,808.41 and 53,814.42

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Solution

The fourth proportional to 99,136.40, 136,808.41 and 53,814.42 is: 74,263.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.40 : 136,808.41 = 53,814.42 : x
  2. Step 2: Convert to fraction form
    99,136.40/136,808.41 = 53,814.42/x
  3. Step 3: Cross multiply
    99,136.40x = 136,808.41 × 53,814.42
  4. Step 4: Simplify right side
    99,136.40x = 7,362,264,416.69
  5. Step 5: Solve for x
    x = 7,362,264,416.69/99,136.40
  6. Step 6: Final answer
    x = 74,263.99

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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.