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Finding the Fourth Proportional to 516,445.81, 711,944.10 and 360,914.23

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Solution

The fourth proportional to 516,445.81, 711,944.10 and 360,914.23 is: 497,536.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,445.81 : 711,944.10 = 360,914.23 : x
  2. Step 2: Convert to fraction form
    516,445.81/711,944.10 = 360,914.23/x
  3. Step 3: Cross multiply
    516,445.81x = 711,944.10 × 360,914.23
  4. Step 4: Simplify right side
    516,445.81x = 256,950,756,654.54
  5. Step 5: Solve for x
    x = 256,950,756,654.54/516,445.81
  6. Step 6: Final answer
    x = 497,536.72

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Double scale
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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.