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Finding the Fourth Proportional to 644,507.27, 889,445.27 and 440,985.05

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Solution

The fourth proportional to 644,507.27, 889,445.27 and 440,985.05 is: 608,576.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,507.27 : 889,445.27 = 440,985.05 : x
  2. Step 2: Convert to fraction form
    644,507.27/889,445.27 = 440,985.05/x
  3. Step 3: Cross multiply
    644,507.27x = 889,445.27 × 440,985.05
  4. Step 4: Simplify right side
    644,507.27x = 392,232,066,863.21
  5. Step 5: Solve for x
    x = 392,232,066,863.21/644,507.27
  6. Step 6: Final answer
    x = 608,576.64

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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.