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Finding the Fourth Proportional to 516,805.58, 713,231.62 and 310,081.70

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Solution

The fourth proportional to 516,805.58, 713,231.62 and 310,081.70 is: 427,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,805.58 : 713,231.62 = 310,081.70 : x
  2. Step 2: Convert to fraction form
    516,805.58/713,231.62 = 310,081.70/x
  3. Step 3: Cross multiply
    516,805.58x = 713,231.62 × 310,081.70
  4. Step 4: Simplify right side
    516,805.58x = 221,160,073,223.35
  5. Step 5: Solve for x
    x = 221,160,073,223.35/516,805.58
  6. Step 6: Final answer
    x = 427,936.70

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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.