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Finding the Fourth Proportional to 528,507.45, 729,330.18 and 299,060.57

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Solution

The fourth proportional to 528,507.45, 729,330.18 and 299,060.57 is: 412,697.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,507.45 : 729,330.18 = 299,060.57 : x
  2. Step 2: Convert to fraction form
    528,507.45/729,330.18 = 299,060.57/x
  3. Step 3: Cross multiply
    528,507.45x = 729,330.18 × 299,060.57
  4. Step 4: Simplify right side
    528,507.45x = 218,113,900,050.85
  5. Step 5: Solve for x
    x = 218,113,900,050.85/528,507.45
  6. Step 6: Final answer
    x = 412,697.87

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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.