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Finding the Fourth Proportional to 284,603.99, 392,753.88 and 157,279.61

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Solution

The fourth proportional to 284,603.99, 392,753.88 and 157,279.61 is: 217,046.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,603.99 : 392,753.88 = 157,279.61 : x
  2. Step 2: Convert to fraction form
    284,603.99/392,753.88 = 157,279.61/x
  3. Step 3: Cross multiply
    284,603.99x = 392,753.88 × 157,279.61
  4. Step 4: Simplify right side
    284,603.99x = 61,772,178,054.27
  5. Step 5: Solve for x
    x = 61,772,178,054.27/284,603.99
  6. Step 6: Final answer
    x = 217,046.08

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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.