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Finding the Fourth Proportional to 291,156.01, 400,862.99 and 284,803.38

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Solution

The fourth proportional to 291,156.01, 400,862.99 and 284,803.38 is: 392,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,156.01 : 400,862.99 = 284,803.38 : x
  2. Step 2: Convert to fraction form
    291,156.01/400,862.99 = 284,803.38/x
  3. Step 3: Cross multiply
    291,156.01x = 400,862.99 × 284,803.38
  4. Step 4: Simplify right side
    291,156.01x = 114,167,134,468.91
  5. Step 5: Solve for x
    x = 114,167,134,468.91/291,156.01
  6. Step 6: Final answer
    x = 392,116.70

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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.