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Finding the Fourth Proportional to 448,931.64, 619,655.22 and 265,340.28

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Solution

The fourth proportional to 448,931.64, 619,655.22 and 265,340.28 is: 366,246.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,931.64 : 619,655.22 = 265,340.28 : x
  2. Step 2: Convert to fraction form
    448,931.64/619,655.22 = 265,340.28/x
  3. Step 3: Cross multiply
    448,931.64x = 619,655.22 × 265,340.28
  4. Step 4: Simplify right side
    448,931.64x = 164,419,489,578.26
  5. Step 5: Solve for x
    x = 164,419,489,578.26/448,931.64
  6. Step 6: Final answer
    x = 366,246.16

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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.