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Finding the Fourth Proportional to 312,725.67, 469,088.63 and 76,066.89

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Solution

The fourth proportional to 312,725.67, 469,088.63 and 76,066.89 is: 114,100.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,725.67 : 469,088.63 = 76,066.89 : x
  2. Step 2: Convert to fraction form
    312,725.67/469,088.63 = 76,066.89/x
  3. Step 3: Cross multiply
    312,725.67x = 469,088.63 × 76,066.89
  4. Step 4: Simplify right side
    312,725.67x = 35,682,112,838.13
  5. Step 5: Solve for x
    x = 35,682,112,838.13/312,725.67
  6. Step 6: Final answer
    x = 114,100.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.