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Finding the Fourth Proportional to 289,425.17, 399,187.10 and 253,552.91

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Solution

The fourth proportional to 289,425.17, 399,187.10 and 253,552.91 is: 349,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,425.17 : 399,187.10 = 253,552.91 : x
  2. Step 2: Convert to fraction form
    289,425.17/399,187.10 = 253,552.91/x
  3. Step 3: Cross multiply
    289,425.17x = 399,187.10 × 253,552.91
  4. Step 4: Simplify right side
    289,425.17x = 101,215,049,477.41
  5. Step 5: Solve for x
    x = 101,215,049,477.41/289,425.17
  6. Step 6: Final answer
    x = 349,710.60

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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.