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Finding the Fourth Proportional to 108,580.61, 162,870.96 and 29,688.86

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Solution

The fourth proportional to 108,580.61, 162,870.96 and 29,688.86 is: 44,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,580.61 : 162,870.96 = 29,688.86 : x
  2. Step 2: Convert to fraction form
    108,580.61/162,870.96 = 29,688.86/x
  3. Step 3: Cross multiply
    108,580.61x = 162,870.96 × 29,688.86
  4. Step 4: Simplify right side
    108,580.61x = 4,835,453,129.51
  5. Step 5: Solve for x
    x = 4,835,453,129.51/108,580.61
  6. Step 6: Final answer
    x = 44,533.30

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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.