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Finding the Fourth Proportional to 563,939.10, 845,908.65 and 405,827.10

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Solution

The fourth proportional to 563,939.10, 845,908.65 and 405,827.10 is: 608,740.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,939.10 : 845,908.65 = 405,827.10 : x
  2. Step 2: Convert to fraction form
    563,939.10/845,908.65 = 405,827.10/x
  3. Step 3: Cross multiply
    563,939.10x = 845,908.65 × 405,827.10
  4. Step 4: Simplify right side
    563,939.10x = 343,292,654,294.42
  5. Step 5: Solve for x
    x = 343,292,654,294.42/563,939.10
  6. Step 6: Final answer
    x = 608,740.65

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.