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Finding the Fourth Proportional to 528,592.20, 729,493.14 and 299,149.16

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Solution

The fourth proportional to 528,592.20, 729,493.14 and 299,149.16 is: 412,846.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,592.20 : 729,493.14 = 299,149.16 : x
  2. Step 2: Convert to fraction form
    528,592.20/729,493.14 = 299,149.16/x
  3. Step 3: Cross multiply
    528,592.20x = 729,493.14 × 299,149.16
  4. Step 4: Simplify right side
    528,592.20x = 218,227,260,056.76
  5. Step 5: Solve for x
    x = 218,227,260,056.76/528,592.20
  6. Step 6: Final answer
    x = 412,846.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.