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Finding the Fourth Proportional to 173,603.40, 260,405.10 and 103,619.40

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Solution

The fourth proportional to 173,603.40, 260,405.10 and 103,619.40 is: 155,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,603.40 : 260,405.10 = 103,619.40 : x
  2. Step 2: Convert to fraction form
    173,603.40/260,405.10 = 103,619.40/x
  3. Step 3: Cross multiply
    173,603.40x = 260,405.10 × 103,619.40
  4. Step 4: Simplify right side
    173,603.40x = 26,983,020,218.94
  5. Step 5: Solve for x
    x = 26,983,020,218.94/173,603.40
  6. Step 6: Final answer
    x = 155,429.10

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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.