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Finding the Fourth Proportional to 536,638.60, 804,957.90 and 347,681.80

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Solution

The fourth proportional to 536,638.60, 804,957.90 and 347,681.80 is: 521,522.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,638.60 : 804,957.90 = 347,681.80 : x
  2. Step 2: Convert to fraction form
    536,638.60/804,957.90 = 347,681.80/x
  3. Step 3: Cross multiply
    536,638.60x = 804,957.90 × 347,681.80
  4. Step 4: Simplify right side
    536,638.60x = 279,869,211,596.22
  5. Step 5: Solve for x
    x = 279,869,211,596.22/536,638.60
  6. Step 6: Final answer
    x = 521,522.70

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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.