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Finding the Fourth Proportional to 334,962.31, 502,443.47 and 85,644.31

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Solution

The fourth proportional to 334,962.31, 502,443.47 and 85,644.31 is: 128,466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,962.31 : 502,443.47 = 85,644.31 : x
  2. Step 2: Convert to fraction form
    334,962.31/502,443.47 = 85,644.31/x
  3. Step 3: Cross multiply
    334,962.31x = 502,443.47 × 85,644.31
  4. Step 4: Simplify right side
    334,962.31x = 43,031,424,302.16
  5. Step 5: Solve for x
    x = 43,031,424,302.16/334,962.31
  6. Step 6: Final answer
    x = 128,466.47

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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.