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Finding the Fourth Proportional to 404,612.70, 607,000.05 and 120,302.70

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Solution

The fourth proportional to 404,612.70, 607,000.05 and 120,302.70 is: 180,478.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,612.70 : 607,000.05 = 120,302.70 : x
  2. Step 2: Convert to fraction form
    404,612.70/607,000.05 = 120,302.70/x
  3. Step 3: Cross multiply
    404,612.70x = 607,000.05 × 120,302.70
  4. Step 4: Simplify right side
    404,612.70x = 73,023,744,915.14
  5. Step 5: Solve for x
    x = 73,023,744,915.14/404,612.70
  6. Step 6: Final answer
    x = 180,478.13

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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.