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Finding the Fourth Proportional to 662,986.80, 995,347.44 and 393,606.72

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Solution

The fourth proportional to 662,986.80, 995,347.44 and 393,606.72 is: 590,924.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,986.80 : 995,347.44 = 393,606.72 : x
  2. Step 2: Convert to fraction form
    662,986.80/995,347.44 = 393,606.72/x
  3. Step 3: Cross multiply
    662,986.80x = 995,347.44 × 393,606.72
  4. Step 4: Simplify right side
    662,986.80x = 391,775,441,118.80
  5. Step 5: Solve for x
    x = 391,775,441,118.80/662,986.80
  6. Step 6: Final answer
    x = 590,924.95

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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.