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Finding the Fourth Proportional to 163,603.10, 245,404.65 and 134,443.10

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Solution

The fourth proportional to 163,603.10, 245,404.65 and 134,443.10 is: 201,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,603.10 : 245,404.65 = 134,443.10 : x
  2. Step 2: Convert to fraction form
    163,603.10/245,404.65 = 134,443.10/x
  3. Step 3: Cross multiply
    163,603.10x = 245,404.65 × 134,443.10
  4. Step 4: Simplify right side
    163,603.10x = 32,992,961,900.42
  5. Step 5: Solve for x
    x = 32,992,961,900.42/163,603.10
  6. Step 6: Final answer
    x = 201,664.65

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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.