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Finding the Fourth Proportional to 677,468.33, 934,838.93 and 391,080.68

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Solution

The fourth proportional to 677,468.33, 934,838.93 and 391,080.68 is: 539,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,468.33 : 934,838.93 = 391,080.68 : x
  2. Step 2: Convert to fraction form
    677,468.33/934,838.93 = 391,080.68/x
  3. Step 3: Cross multiply
    677,468.33x = 934,838.93 × 391,080.68
  4. Step 4: Simplify right side
    677,468.33x = 365,597,442,479.47
  5. Step 5: Solve for x
    x = 365,597,442,479.47/677,468.33
  6. Step 6: Final answer
    x = 539,652.45

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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.