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Finding the Fourth Proportional to 516,347.87, 774,824.95 and 216,805.41

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Solution

The fourth proportional to 516,347.87, 774,824.95 and 216,805.41 is: 325,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,347.87 : 774,824.95 = 216,805.41 : x
  2. Step 2: Convert to fraction form
    516,347.87/774,824.95 = 216,805.41/x
  3. Step 3: Cross multiply
    516,347.87x = 774,824.95 × 216,805.41
  4. Step 4: Simplify right side
    516,347.87x = 167,986,241,816.02
  5. Step 5: Solve for x
    x = 167,986,241,816.02/516,347.87
  6. Step 6: Final answer
    x = 325,335.40

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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.