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Finding the Fourth Proportional to 661,276.41, 910,941.71 and 479,454.09

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Solution

The fourth proportional to 661,276.41, 910,941.71 and 479,454.09 is: 660,472.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,276.41 : 910,941.71 = 479,454.09 : x
  2. Step 2: Convert to fraction form
    661,276.41/910,941.71 = 479,454.09/x
  3. Step 3: Cross multiply
    661,276.41x = 910,941.71 × 479,454.09
  4. Step 4: Simplify right side
    661,276.41x = 436,754,726,213.82
  5. Step 5: Solve for x
    x = 436,754,726,213.82/661,276.41
  6. Step 6: Final answer
    x = 660,472.26

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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.