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Finding the Fourth Proportional to 313,685.42, 470,263.60 and 136,058.64

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Solution

The fourth proportional to 313,685.42, 470,263.60 and 136,058.64 is: 203,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,685.42 : 470,263.60 = 136,058.64 : x
  2. Step 2: Convert to fraction form
    313,685.42/470,263.60 = 136,058.64/x
  3. Step 3: Cross multiply
    313,685.42x = 470,263.60 × 136,058.64
  4. Step 4: Simplify right side
    313,685.42x = 63,983,425,857.50
  5. Step 5: Solve for x
    x = 63,983,425,857.50/313,685.42
  6. Step 6: Final answer
    x = 203,973.22

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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.