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Finding the Fourth Proportional to 528,031.56, 791,697.34 and 191,028.38

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Solution

The fourth proportional to 528,031.56, 791,697.34 and 191,028.38 is: 286,415.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,031.56 : 791,697.34 = 191,028.38 : x
  2. Step 2: Convert to fraction form
    528,031.56/791,697.34 = 191,028.38/x
  3. Step 3: Cross multiply
    528,031.56x = 791,697.34 × 191,028.38
  4. Step 4: Simplify right side
    528,031.56x = 151,236,656,590.81
  5. Step 5: Solve for x
    x = 151,236,656,590.81/528,031.56
  6. Step 6: Final answer
    x = 286,415.94

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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.