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Finding the Fourth Proportional to 447,374.72, 617,391.64 and 256,424.10

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Solution

The fourth proportional to 447,374.72, 617,391.64 and 256,424.10 is: 353,873.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,374.72 : 617,391.64 = 256,424.10 : x
  2. Step 2: Convert to fraction form
    447,374.72/617,391.64 = 256,424.10/x
  3. Step 3: Cross multiply
    447,374.72x = 617,391.64 × 256,424.10
  4. Step 4: Simplify right side
    447,374.72x = 158,314,095,634.52
  5. Step 5: Solve for x
    x = 158,314,095,634.52/447,374.72
  6. Step 6: Final answer
    x = 353,873.58

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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.