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Finding the Fourth Proportional to 94,714.40, 142,148.40 and 91,642.40

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Solution

The fourth proportional to 94,714.40, 142,148.40 and 91,642.40 is: 137,537.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,714.40 : 142,148.40 = 91,642.40 : x
  2. Step 2: Convert to fraction form
    94,714.40/142,148.40 = 91,642.40/x
  3. Step 3: Cross multiply
    94,714.40x = 142,148.40 × 91,642.40
  4. Step 4: Simplify right side
    94,714.40x = 13,026,820,532.16
  5. Step 5: Solve for x
    x = 13,026,820,532.16/94,714.40
  6. Step 6: Final answer
    x = 137,537.91

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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.