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Finding the Fourth Proportional to 519,499.05, 716,901.64 and 290,059.86

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Solution

The fourth proportional to 519,499.05, 716,901.64 and 290,059.86 is: 400,278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,499.05 : 716,901.64 = 290,059.86 : x
  2. Step 2: Convert to fraction form
    519,499.05/716,901.64 = 290,059.86/x
  3. Step 3: Cross multiply
    519,499.05x = 716,901.64 × 290,059.86
  4. Step 4: Simplify right side
    519,499.05x = 207,944,389,332.17
  5. Step 5: Solve for x
    x = 207,944,389,332.17/519,499.05
  6. Step 6: Final answer
    x = 400,278.67

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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.