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Finding the Fourth Proportional to 352,123.02, 528,190.02 and 85,888.62

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Solution

The fourth proportional to 352,123.02, 528,190.02 and 85,888.62 is: 128,834.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,123.02 : 528,190.02 = 85,888.62 : x
  2. Step 2: Convert to fraction form
    352,123.02/528,190.02 = 85,888.62/x
  3. Step 3: Cross multiply
    352,123.02x = 528,190.02 × 85,888.62
  4. Step 4: Simplify right side
    352,123.02x = 45,365,511,915.57
  5. Step 5: Solve for x
    x = 45,365,511,915.57/352,123.02
  6. Step 6: Final answer
    x = 128,834.27

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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.