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Finding the Fourth Proportional to 644,587.32, 889,546.32 and 354,196.53

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Solution

The fourth proportional to 644,587.32, 889,546.32 and 354,196.53 is: 488,799.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,587.32 : 889,546.32 = 354,196.53 : x
  2. Step 2: Convert to fraction form
    644,587.32/889,546.32 = 354,196.53/x
  3. Step 3: Cross multiply
    644,587.32x = 889,546.32 × 354,196.53
  4. Step 4: Simplify right side
    644,587.32x = 315,074,219,818.27
  5. Step 5: Solve for x
    x = 315,074,219,818.27/644,587.32
  6. Step 6: Final answer
    x = 488,799.90

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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.