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Finding the Fourth Proportional to 521,408.69, 719,543.99 and 282,944.69

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Solution

The fourth proportional to 521,408.69, 719,543.99 and 282,944.69 is: 390,463.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,408.69 : 719,543.99 = 282,944.69 : x
  2. Step 2: Convert to fraction form
    521,408.69/719,543.99 = 282,944.69/x
  3. Step 3: Cross multiply
    521,408.69x = 719,543.99 × 282,944.69
  4. Step 4: Simplify right side
    521,408.69x = 203,591,151,191.91
  5. Step 5: Solve for x
    x = 203,591,151,191.91/521,408.69
  6. Step 6: Final answer
    x = 390,463.67

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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.