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Finding the Fourth Proportional to 144,461.90, 216,606.45 and 74,477.90

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Solution

The fourth proportional to 144,461.90, 216,606.45 and 74,477.90 is: 111,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,461.90 : 216,606.45 = 74,477.90 : x
  2. Step 2: Convert to fraction form
    144,461.90/216,606.45 = 74,477.90/x
  3. Step 3: Cross multiply
    144,461.90x = 216,606.45 × 74,477.90
  4. Step 4: Simplify right side
    144,461.90x = 16,132,393,522.46
  5. Step 5: Solve for x
    x = 16,132,393,522.46/144,461.90
  6. Step 6: Final answer
    x = 111,672.31

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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.