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Finding the Fourth Proportional to 116,051.60, 173,731.80 and 69,280.40

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Solution

The fourth proportional to 116,051.60, 173,731.80 and 69,280.40 is: 103,714.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,051.60 : 173,731.80 = 69,280.40 : x
  2. Step 2: Convert to fraction form
    116,051.60/173,731.80 = 69,280.40/x
  3. Step 3: Cross multiply
    116,051.60x = 173,731.80 × 69,280.40
  4. Step 4: Simplify right side
    116,051.60x = 12,036,208,596.72
  5. Step 5: Solve for x
    x = 12,036,208,596.72/116,051.60
  6. Step 6: Final answer
    x = 103,714.28

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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.