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Finding the Fourth Proportional to 351,861.66, 485,567.28 and 190,715.40

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Solution

The fourth proportional to 351,861.66, 485,567.28 and 190,715.40 is: 263,186.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,861.66 : 485,567.28 = 190,715.40 : x
  2. Step 2: Convert to fraction form
    351,861.66/485,567.28 = 190,715.40/x
  3. Step 3: Cross multiply
    351,861.66x = 485,567.28 × 190,715.40
  4. Step 4: Simplify right side
    351,861.66x = 92,605,158,032.11
  5. Step 5: Solve for x
    x = 92,605,158,032.11/351,861.66
  6. Step 6: Final answer
    x = 263,186.27

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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.