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Finding the Fourth Proportional to 516,347.81, 774,824.85 and 216,805.35

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Solution

The fourth proportional to 516,347.81, 774,824.85 and 216,805.35 is: 325,335.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,347.81 : 774,824.85 = 216,805.35 : x
  2. Step 2: Convert to fraction form
    516,347.81/774,824.85 = 216,805.35/x
  3. Step 3: Cross multiply
    516,347.81x = 774,824.85 × 216,805.35
  4. Step 4: Simplify right side
    516,347.81x = 167,986,172,792.95
  5. Step 5: Solve for x
    x = 167,986,172,792.95/516,347.81
  6. Step 6: Final answer
    x = 325,335.31

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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.