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Finding the Fourth Proportional to 462,725.39, 638,415.74 and 258,748.76

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Solution

The fourth proportional to 462,725.39, 638,415.74 and 258,748.76 is: 356,992.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,725.39 : 638,415.74 = 258,748.76 : x
  2. Step 2: Convert to fraction form
    462,725.39/638,415.74 = 258,748.76/x
  3. Step 3: Cross multiply
    462,725.39x = 638,415.74 × 258,748.76
  4. Step 4: Simplify right side
    462,725.39x = 165,189,283,332.39
  5. Step 5: Solve for x
    x = 165,189,283,332.39/462,725.39
  6. Step 6: Final answer
    x = 356,992.04

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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.