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Finding the Fourth Proportional to 448,785.77, 619,263.02 and 257,799.11

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Solution

The fourth proportional to 448,785.77, 619,263.02 and 257,799.11 is: 355,727.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,785.77 : 619,263.02 = 257,799.11 : x
  2. Step 2: Convert to fraction form
    448,785.77/619,263.02 = 257,799.11/x
  3. Step 3: Cross multiply
    448,785.77x = 619,263.02 × 257,799.11
  4. Step 4: Simplify right side
    448,785.77x = 159,645,452,960.10
  5. Step 5: Solve for x
    x = 159,645,452,960.10/448,785.77
  6. Step 6: Final answer
    x = 355,727.53

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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.