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Finding the Fourth Proportional to 354,763.48, 531,828.72 and 130,071.44

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Solution

The fourth proportional to 354,763.48, 531,828.72 and 130,071.44 is: 194,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,763.48 : 531,828.72 = 130,071.44 : x
  2. Step 2: Convert to fraction form
    354,763.48/531,828.72 = 130,071.44/x
  3. Step 3: Cross multiply
    354,763.48x = 531,828.72 × 130,071.44
  4. Step 4: Simplify right side
    354,763.48x = 69,175,727,443.76
  5. Step 5: Solve for x
    x = 69,175,727,443.76/354,763.48
  6. Step 6: Final answer
    x = 194,991.12

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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.