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Finding the Fourth Proportional to 623,818.40, 934,415.40 and 518,842.40

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Solution

The fourth proportional to 623,818.40, 934,415.40 and 518,842.40 is: 777,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,818.40 : 934,415.40 = 518,842.40 : x
  2. Step 2: Convert to fraction form
    623,818.40/934,415.40 = 518,842.40/x
  3. Step 3: Cross multiply
    623,818.40x = 934,415.40 × 518,842.40
  4. Step 4: Simplify right side
    623,818.40x = 484,814,328,732.96
  5. Step 5: Solve for x
    x = 484,814,328,732.96/623,818.40
  6. Step 6: Final answer
    x = 777,172.22

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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.