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Finding the Fourth Proportional to 529,534.60, 794,301.90 and 319,064.20

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Solution

The fourth proportional to 529,534.60, 794,301.90 and 319,064.20 is: 478,596.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,534.60 : 794,301.90 = 319,064.20 : x
  2. Step 2: Convert to fraction form
    529,534.60/794,301.90 = 319,064.20/x
  3. Step 3: Cross multiply
    529,534.60x = 794,301.90 × 319,064.20
  4. Step 4: Simplify right side
    529,534.60x = 253,433,300,281.98
  5. Step 5: Solve for x
    x = 253,433,300,281.98/529,534.60
  6. Step 6: Final answer
    x = 478,596.30

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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.