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Finding the Fourth Proportional to 383,258.94, 528,897.24 and 211,179.30

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Solution

The fourth proportional to 383,258.94, 528,897.24 and 211,179.30 is: 291,427.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,258.94 : 528,897.24 = 211,179.30 : x
  2. Step 2: Convert to fraction form
    383,258.94/528,897.24 = 211,179.30/x
  3. Step 3: Cross multiply
    383,258.94x = 528,897.24 × 211,179.30
  4. Step 4: Simplify right side
    383,258.94x = 111,692,148,915.13
  5. Step 5: Solve for x
    x = 111,692,148,915.13/383,258.94
  6. Step 6: Final answer
    x = 291,427.38

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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.