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Finding the Fourth Proportional to 170,972.80, 256,459.20 and 46,313.80

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Solution

The fourth proportional to 170,972.80, 256,459.20 and 46,313.80 is: 69,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,972.80 : 256,459.20 = 46,313.80 : x
  2. Step 2: Convert to fraction form
    170,972.80/256,459.20 = 46,313.80/x
  3. Step 3: Cross multiply
    170,972.80x = 256,459.20 × 46,313.80
  4. Step 4: Simplify right side
    170,972.80x = 11,877,600,096.96
  5. Step 5: Solve for x
    x = 11,877,600,096.96/170,972.80
  6. Step 6: Final answer
    x = 69,470.70

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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.