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Finding the Fourth Proportional to 389,509.11, 584,263.68 and 94,021.11

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Solution

The fourth proportional to 389,509.11, 584,263.68 and 94,021.11 is: 141,031.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,509.11 : 584,263.68 = 94,021.11 : x
  2. Step 2: Convert to fraction form
    389,509.11/584,263.68 = 94,021.11/x
  3. Step 3: Cross multiply
    389,509.11x = 584,263.68 × 94,021.11
  4. Step 4: Simplify right side
    389,509.11x = 54,933,119,726.28
  5. Step 5: Solve for x
    x = 54,933,119,726.28/389,509.11
  6. Step 6: Final answer
    x = 141,031.67

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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.