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Finding the Fourth Proportional to 670,496.16, 925,207.04 and 383,999.12

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Solution

The fourth proportional to 670,496.16, 925,207.04 and 383,999.12 is: 529,874.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,496.16 : 925,207.04 = 383,999.12 : x
  2. Step 2: Convert to fraction form
    670,496.16/925,207.04 = 383,999.12/x
  3. Step 3: Cross multiply
    670,496.16x = 925,207.04 × 383,999.12
  4. Step 4: Simplify right side
    670,496.16x = 355,278,689,177.81
  5. Step 5: Solve for x
    x = 355,278,689,177.81/670,496.16
  6. Step 6: Final answer
    x = 529,874.31

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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.