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Finding the Fourth Proportional to 156,094.77, 215,411.16 and 84,475.31

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Solution

The fourth proportional to 156,094.77, 215,411.16 and 84,475.31 is: 116,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,094.77 : 215,411.16 = 84,475.31 : x
  2. Step 2: Convert to fraction form
    156,094.77/215,411.16 = 84,475.31/x
  3. Step 3: Cross multiply
    156,094.77x = 215,411.16 × 84,475.31
  4. Step 4: Simplify right side
    156,094.77x = 18,196,924,518.46
  5. Step 5: Solve for x
    x = 18,196,924,518.46/156,094.77
  6. Step 6: Final answer
    x = 116,576.13

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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.