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Finding the Fourth Proportional to 352,610.40, 528,964.20 and 127,916.40

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Solution

The fourth proportional to 352,610.40, 528,964.20 and 127,916.40 is: 191,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,610.40 : 528,964.20 = 127,916.40 : x
  2. Step 2: Convert to fraction form
    352,610.40/528,964.20 = 127,916.40/x
  3. Step 3: Cross multiply
    352,610.40x = 528,964.20 × 127,916.40
  4. Step 4: Simplify right side
    352,610.40x = 67,663,196,192.88
  5. Step 5: Solve for x
    x = 67,663,196,192.88/352,610.40
  6. Step 6: Final answer
    x = 191,892.23

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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.