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Finding the Fourth Proportional to 98,622.63, 148,039.25 and 42,490.58

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Solution

The fourth proportional to 98,622.63, 148,039.25 and 42,490.58 is: 63,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,622.63 : 148,039.25 = 42,490.58 : x
  2. Step 2: Convert to fraction form
    98,622.63/148,039.25 = 42,490.58/x
  3. Step 3: Cross multiply
    98,622.63x = 148,039.25 × 42,490.58
  4. Step 4: Simplify right side
    98,622.63x = 6,290,272,642.62
  5. Step 5: Solve for x
    x = 6,290,272,642.62/98,622.63
  6. Step 6: Final answer
    x = 63,781.23

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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.