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Finding the Fourth Proportional to 541,990.40, 812,985.60 and 365,043.20

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Solution

The fourth proportional to 541,990.40, 812,985.60 and 365,043.20 is: 547,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,990.40 : 812,985.60 = 365,043.20 : x
  2. Step 2: Convert to fraction form
    541,990.40/812,985.60 = 365,043.20/x
  3. Step 3: Cross multiply
    541,990.40x = 812,985.60 × 365,043.20
  4. Step 4: Simplify right side
    541,990.40x = 296,774,864,977.92
  5. Step 5: Solve for x
    x = 296,774,864,977.92/541,990.40
  6. Step 6: Final answer
    x = 547,564.80

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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.