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Finding the Fourth Proportional to 268,395.82, 370,386.99 and 153,676.24

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Solution

The fourth proportional to 268,395.82, 370,386.99 and 153,676.24 is: 212,073.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,395.82 : 370,386.99 = 153,676.24 : x
  2. Step 2: Convert to fraction form
    268,395.82/370,386.99 = 153,676.24/x
  3. Step 3: Cross multiply
    268,395.82x = 370,386.99 × 153,676.24
  4. Step 4: Simplify right side
    268,395.82x = 56,919,679,968.12
  5. Step 5: Solve for x
    x = 56,919,679,968.12/268,395.82
  6. Step 6: Final answer
    x = 212,073.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.