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Finding the Fourth Proportional to 668,919.23, 923,109.17 and 382,445.32

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Solution

The fourth proportional to 668,919.23, 923,109.17 and 382,445.32 is: 527,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,919.23 : 923,109.17 = 382,445.32 : x
  2. Step 2: Convert to fraction form
    668,919.23/923,109.17 = 382,445.32/x
  3. Step 3: Cross multiply
    668,919.23x = 923,109.17 × 382,445.32
  4. Step 4: Simplify right side
    668,919.23x = 353,038,781,915.58
  5. Step 5: Solve for x
    x = 353,038,781,915.58/668,919.23
  6. Step 6: Final answer
    x = 527,774.90

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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.