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Finding the Fourth Proportional to 885,772.54, 1,326,661.21 and 411,459.76

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Solution

The fourth proportional to 885,772.54, 1,326,661.21 and 411,459.76 is: 616,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,772.54 : 1,326,661.21 = 411,459.76 : x
  2. Step 2: Convert to fraction form
    885,772.54/1,326,661.21 = 411,459.76/x
  3. Step 3: Cross multiply
    885,772.54x = 1,326,661.21 × 411,459.76
  4. Step 4: Simplify right side
    885,772.54x = 545,867,703,067.91
  5. Step 5: Solve for x
    x = 545,867,703,067.91/885,772.54
  6. Step 6: Final answer
    x = 616,261.71

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.