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Finding the Fourth Proportional to 354,047.40, 531,071.10 and 167,423.40

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Solution

The fourth proportional to 354,047.40, 531,071.10 and 167,423.40 is: 251,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,047.40 : 531,071.10 = 167,423.40 : x
  2. Step 2: Convert to fraction form
    354,047.40/531,071.10 = 167,423.40/x
  3. Step 3: Cross multiply
    354,047.40x = 531,071.10 × 167,423.40
  4. Step 4: Simplify right side
    354,047.40x = 88,913,729,203.74
  5. Step 5: Solve for x
    x = 88,913,729,203.74/354,047.40
  6. Step 6: Final answer
    x = 251,135.10

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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.