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Finding the Fourth Proportional to 223,312.02, 308,172.47 and 121,337.48

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Solution

The fourth proportional to 223,312.02, 308,172.47 and 121,337.48 is: 167,446.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,312.02 : 308,172.47 = 121,337.48 : x
  2. Step 2: Convert to fraction form
    223,312.02/308,172.47 = 121,337.48/x
  3. Step 3: Cross multiply
    223,312.02x = 308,172.47 × 121,337.48
  4. Step 4: Simplify right side
    223,312.02x = 37,392,871,078.92
  5. Step 5: Solve for x
    x = 37,392,871,078.92/223,312.02
  6. Step 6: Final answer
    x = 167,446.75

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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.