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Finding the Fourth Proportional to 389,291.04, 583,886.07 and 123,078.42

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Solution

The fourth proportional to 389,291.04, 583,886.07 and 123,078.42 is: 184,601.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,291.04 : 583,886.07 = 123,078.42 : x
  2. Step 2: Convert to fraction form
    389,291.04/583,886.07 = 123,078.42/x
  3. Step 3: Cross multiply
    389,291.04x = 583,886.07 × 123,078.42
  4. Step 4: Simplify right side
    389,291.04x = 71,863,774,955.61
  5. Step 5: Solve for x
    x = 71,863,774,955.61/389,291.04
  6. Step 6: Final answer
    x = 184,601.67

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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.