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Finding the Fourth Proportional to 516,957.71, 775,436.85 and 161,999.51

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Solution

The fourth proportional to 516,957.71, 775,436.85 and 161,999.51 is: 242,999.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,957.71 : 775,436.85 = 161,999.51 : x
  2. Step 2: Convert to fraction form
    516,957.71/775,436.85 = 161,999.51/x
  3. Step 3: Cross multiply
    516,957.71x = 775,436.85 × 161,999.51
  4. Step 4: Simplify right side
    516,957.71x = 125,620,391,674.54
  5. Step 5: Solve for x
    x = 125,620,391,674.54/516,957.71
  6. Step 6: Final answer
    x = 242,999.36

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Double scale
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Similar ratio
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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.