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Finding the Fourth Proportional to 760,711.92, 1,049,778.78 and 411,852.54

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Solution

The fourth proportional to 760,711.92, 1,049,778.78 and 411,852.54 is: 568,354.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,711.92 : 1,049,778.78 = 411,852.54 : x
  2. Step 2: Convert to fraction form
    760,711.92/1,049,778.78 = 411,852.54/x
  3. Step 3: Cross multiply
    760,711.92x = 1,049,778.78 × 411,852.54
  4. Step 4: Simplify right side
    760,711.92x = 432,354,056,981.10
  5. Step 5: Solve for x
    x = 432,354,056,981.10/760,711.92
  6. Step 6: Final answer
    x = 568,354.52

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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.