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Finding the Fourth Proportional to 225,302.72, 310,916.64 and 124,700.48

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Solution

The fourth proportional to 225,302.72, 310,916.64 and 124,700.48 is: 172,086.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,302.72 : 310,916.64 = 124,700.48 : x
  2. Step 2: Convert to fraction form
    225,302.72/310,916.64 = 124,700.48/x
  3. Step 3: Cross multiply
    225,302.72x = 310,916.64 × 124,700.48
  4. Step 4: Simplify right side
    225,302.72x = 38,771,454,247.99
  5. Step 5: Solve for x
    x = 38,771,454,247.99/225,302.72
  6. Step 6: Final answer
    x = 172,086.05

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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.