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Finding the Fourth Proportional to 683,136.08, 940,640.88 and 619,056.98

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Solution

The fourth proportional to 683,136.08, 940,640.88 and 619,056.98 is: 852,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,136.08 : 940,640.88 = 619,056.98 : x
  2. Step 2: Convert to fraction form
    683,136.08/940,640.88 = 619,056.98/x
  3. Step 3: Cross multiply
    683,136.08x = 940,640.88 × 619,056.98
  4. Step 4: Simplify right side
    683,136.08x = 582,310,302,437.34
  5. Step 5: Solve for x
    x = 582,310,302,437.34/683,136.08
  6. Step 6: Final answer
    x = 852,407.48

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Double scale
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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.