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Finding the Fourth Proportional to 677,190.38, 934,530.32 and 386,840.38

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Solution

The fourth proportional to 677,190.38, 934,530.32 and 386,840.38 is: 533,844.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,190.38 : 934,530.32 = 386,840.38 : x
  2. Step 2: Convert to fraction form
    677,190.38/934,530.32 = 386,840.38/x
  3. Step 3: Cross multiply
    677,190.38x = 934,530.32 × 386,840.38
  4. Step 4: Simplify right side
    677,190.38x = 361,514,064,110.32
  5. Step 5: Solve for x
    x = 361,514,064,110.32/677,190.38
  6. Step 6: Final answer
    x = 533,844.06

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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.