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Finding the Fourth Proportional to 541,715.60, 812,573.40 and 261,779.60

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Solution

The fourth proportional to 541,715.60, 812,573.40 and 261,779.60 is: 392,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,715.60 : 812,573.40 = 261,779.60 : x
  2. Step 2: Convert to fraction form
    541,715.60/812,573.40 = 261,779.60/x
  3. Step 3: Cross multiply
    541,715.60x = 812,573.40 × 261,779.60
  4. Step 4: Simplify right side
    541,715.60x = 212,715,139,622.64
  5. Step 5: Solve for x
    x = 212,715,139,622.64/541,715.60
  6. Step 6: Final answer
    x = 392,669.40

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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.