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Finding the Fourth Proportional to 136,762.65, 188,727.53 and 85,802.83

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Solution

The fourth proportional to 136,762.65, 188,727.53 and 85,802.83 is: 118,404.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,762.65 : 188,727.53 = 85,802.83 : x
  2. Step 2: Convert to fraction form
    136,762.65/188,727.53 = 85,802.83/x
  3. Step 3: Cross multiply
    136,762.65x = 188,727.53 × 85,802.83
  4. Step 4: Simplify right side
    136,762.65x = 16,193,355,272.08
  5. Step 5: Solve for x
    x = 16,193,355,272.08/136,762.65
  6. Step 6: Final answer
    x = 118,404.81

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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.