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Finding the Fourth Proportional to 331,386.60, 448,071.75 and 331,386.60

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Solution

The fourth proportional to 331,386.60, 448,071.75 and 331,386.60 is: 448,071.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,386.60 : 448,071.75 = 331,386.60 : x
  2. Step 2: Convert to fraction form
    331,386.60/448,071.75 = 331,386.60/x
  3. Step 3: Cross multiply
    331,386.60x = 448,071.75 × 331,386.60
  4. Step 4: Simplify right side
    331,386.60x = 148,484,973,788.55
  5. Step 5: Solve for x
    x = 148,484,973,788.55/331,386.60
  6. Step 6: Final answer
    x = 448,071.75

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.