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Finding the Fourth Proportional to 151,688.70, 227,678.85 and 76,893.30

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Solution

The fourth proportional to 151,688.70, 227,678.85 and 76,893.30 is: 115,413.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,688.70 : 227,678.85 = 76,893.30 : x
  2. Step 2: Convert to fraction form
    151,688.70/227,678.85 = 76,893.30/x
  3. Step 3: Cross multiply
    151,688.70x = 227,678.85 × 76,893.30
  4. Step 4: Simplify right side
    151,688.70x = 17,506,978,116.71
  5. Step 5: Solve for x
    x = 17,506,978,116.71/151,688.70
  6. Step 6: Final answer
    x = 115,413.86

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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.