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Finding the Fourth Proportional to 173,412.30, 260,139.30 and 61,069.31

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Solution

The fourth proportional to 173,412.30, 260,139.30 and 61,069.31 is: 91,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,412.30 : 260,139.30 = 61,069.31 : x
  2. Step 2: Convert to fraction form
    173,412.30/260,139.30 = 61,069.31/x
  3. Step 3: Cross multiply
    173,412.30x = 260,139.30 × 61,069.31
  4. Step 4: Simplify right side
    173,412.30x = 15,886,526,254.19
  5. Step 5: Solve for x
    x = 15,886,526,254.19/173,412.30
  6. Step 6: Final answer
    x = 91,611.30

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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.