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Finding the Fourth Proportional to 671,085.69, 926,098.20 and 369,279.69

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Solution

The fourth proportional to 671,085.69, 926,098.20 and 369,279.69 is: 509,605.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,085.69 : 926,098.20 = 369,279.69 : x
  2. Step 2: Convert to fraction form
    671,085.69/926,098.20 = 369,279.69/x
  3. Step 3: Cross multiply
    671,085.69x = 926,098.20 × 369,279.69
  4. Step 4: Simplify right side
    671,085.69x = 341,989,256,205.56
  5. Step 5: Solve for x
    x = 341,989,256,205.56/671,085.69
  6. Step 6: Final answer
    x = 509,605.94

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Half scale
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Double scale
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Similar ratio
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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.