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Finding the Fourth Proportional to 640,442.60, 960,645.67 and 191,167.19

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Solution

The fourth proportional to 640,442.60, 960,645.67 and 191,167.19 is: 286,745.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,442.60 : 960,645.67 = 191,167.19 : x
  2. Step 2: Convert to fraction form
    640,442.60/960,645.67 = 191,167.19/x
  3. Step 3: Cross multiply
    640,442.60x = 960,645.67 × 191,167.19
  4. Step 4: Simplify right side
    640,442.60x = 183,643,932,716.16
  5. Step 5: Solve for x
    x = 183,643,932,716.16/640,442.60
  6. Step 6: Final answer
    x = 286,745.34

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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.