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Finding the Fourth Proportional to 136,459.91, 203,730.35 and 104,270.51

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Solution

The fourth proportional to 136,459.91, 203,730.35 and 104,270.51 is: 155,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,459.91 : 203,730.35 = 104,270.51 : x
  2. Step 2: Convert to fraction form
    136,459.91/203,730.35 = 104,270.51/x
  3. Step 3: Cross multiply
    136,459.91x = 203,730.35 × 104,270.51
  4. Step 4: Simplify right side
    136,459.91x = 21,243,068,266.98
  5. Step 5: Solve for x
    x = 21,243,068,266.98/136,459.91
  6. Step 6: Final answer
    x = 155,672.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.