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Finding the Fourth Proportional to 133,136.68, 183,684.36 and 87,837.16

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Solution

The fourth proportional to 133,136.68, 183,684.36 and 87,837.16 is: 121,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,136.68 : 183,684.36 = 87,837.16 : x
  2. Step 2: Convert to fraction form
    133,136.68/183,684.36 = 87,837.16/x
  3. Step 3: Cross multiply
    133,136.68x = 183,684.36 × 87,837.16
  4. Step 4: Simplify right side
    133,136.68x = 16,134,312,518.82
  5. Step 5: Solve for x
    x = 16,134,312,518.82/133,136.68
  6. Step 6: Final answer
    x = 121,186.08

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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.