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Finding the Fourth Proportional to 447,411.60, 617,454.56 and 256,437.32

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Solution

The fourth proportional to 447,411.60, 617,454.56 and 256,437.32 is: 353,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,411.60 : 617,454.56 = 256,437.32 : x
  2. Step 2: Convert to fraction form
    447,411.60/617,454.56 = 256,437.32/x
  3. Step 3: Cross multiply
    447,411.60x = 617,454.56 × 256,437.32
  4. Step 4: Simplify right side
    447,411.60x = 158,338,392,588.18
  5. Step 5: Solve for x
    x = 158,338,392,588.18/447,411.60
  6. Step 6: Final answer
    x = 353,898.72

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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.