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Finding the Fourth Proportional to 447,153.81, 617,071.81 and 256,167.96

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Solution

The fourth proportional to 447,153.81, 617,071.81 and 256,167.96 is: 353,511.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,153.81 : 617,071.81 = 256,167.96 : x
  2. Step 2: Convert to fraction form
    447,153.81/617,071.81 = 256,167.96/x
  3. Step 3: Cross multiply
    447,153.81x = 617,071.81 × 256,167.96
  4. Step 4: Simplify right side
    447,153.81x = 158,074,026,741.21
  5. Step 5: Solve for x
    x = 158,074,026,741.21/447,153.81
  6. Step 6: Final answer
    x = 353,511.53

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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.