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Finding the Fourth Proportional to 163,718.40, 245,577.60 and 122,246.40

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Solution

The fourth proportional to 163,718.40, 245,577.60 and 122,246.40 is: 183,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,718.40 : 245,577.60 = 122,246.40 : x
  2. Step 2: Convert to fraction form
    163,718.40/245,577.60 = 122,246.40/x
  3. Step 3: Cross multiply
    163,718.40x = 245,577.60 × 122,246.40
  4. Step 4: Simplify right side
    163,718.40x = 30,020,977,520.64
  5. Step 5: Solve for x
    x = 30,020,977,520.64/163,718.40
  6. Step 6: Final answer
    x = 183,369.60

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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.