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Finding the Fourth Proportional to 248,438.59, 372,672.20 and 70,931.95

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Solution

The fourth proportional to 248,438.59, 372,672.20 and 70,931.95 is: 106,402.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,438.59 : 372,672.20 = 70,931.95 : x
  2. Step 2: Convert to fraction form
    248,438.59/372,672.20 = 70,931.95/x
  3. Step 3: Cross multiply
    248,438.59x = 372,672.20 × 70,931.95
  4. Step 4: Simplify right side
    248,438.59x = 26,434,365,856.79
  5. Step 5: Solve for x
    x = 26,434,365,856.79/248,438.59
  6. Step 6: Final answer
    x = 106,402.01

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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.