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Finding the Fourth Proportional to 291,155.01, 400,861.61 and 284,802.38

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Solution

The fourth proportional to 291,155.01, 400,861.61 and 284,802.38 is: 392,115.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,155.01 : 400,861.61 = 284,802.38 : x
  2. Step 2: Convert to fraction form
    291,155.01/400,861.61 = 284,802.38/x
  3. Step 3: Cross multiply
    291,155.01x = 400,861.61 × 284,802.38
  4. Step 4: Simplify right side
    291,155.01x = 114,166,339,721.55
  5. Step 5: Solve for x
    x = 114,166,339,721.55/291,155.01
  6. Step 6: Final answer
    x = 392,115.32

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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.