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Finding the Fourth Proportional to 699,332.94, 965,008.08 and 393,360.30

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Solution

The fourth proportional to 699,332.94, 965,008.08 and 393,360.30 is: 542,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,332.94 : 965,008.08 = 393,360.30 : x
  2. Step 2: Convert to fraction form
    699,332.94/965,008.08 = 393,360.30/x
  3. Step 3: Cross multiply
    699,332.94x = 965,008.08 × 393,360.30
  4. Step 4: Simplify right side
    699,332.94x = 379,595,867,851.22
  5. Step 5: Solve for x
    x = 379,595,867,851.22/699,332.94
  6. Step 6: Final answer
    x = 542,797.07

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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.