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Finding the Fourth Proportional to 513,636.40, 771,376.20 and 373,553.20

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Solution

The fourth proportional to 513,636.40, 771,376.20 and 373,553.20 is: 561,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,636.40 : 771,376.20 = 373,553.20 : x
  2. Step 2: Convert to fraction form
    513,636.40/771,376.20 = 373,553.20/x
  3. Step 3: Cross multiply
    513,636.40x = 771,376.20 × 373,553.20
  4. Step 4: Simplify right side
    513,636.40x = 288,150,047,913.84
  5. Step 5: Solve for x
    x = 288,150,047,913.84/513,636.40
  6. Step 6: Final answer
    x = 561,000.05

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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.