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Finding the Fourth Proportional to 88,411.51, 122,023.70 and 56,579.32

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Solution

The fourth proportional to 88,411.51, 122,023.70 and 56,579.32 is: 78,089.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,411.51 : 122,023.70 = 56,579.32 : x
  2. Step 2: Convert to fraction form
    88,411.51/122,023.70 = 56,579.32/x
  3. Step 3: Cross multiply
    88,411.51x = 122,023.70 × 56,579.32
  4. Step 4: Simplify right side
    88,411.51x = 6,904,017,969.88
  5. Step 5: Solve for x
    x = 6,904,017,969.88/88,411.51
  6. Step 6: Final answer
    x = 78,089.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.