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Finding the Fourth Proportional to 448,434.83, 618,763.96 and 257,444.12

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Solution

The fourth proportional to 448,434.83, 618,763.96 and 257,444.12 is: 355,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,434.83 : 618,763.96 = 257,444.12 : x
  2. Step 2: Convert to fraction form
    448,434.83/618,763.96 = 257,444.12/x
  3. Step 3: Cross multiply
    448,434.83x = 618,763.96 × 257,444.12
  4. Step 4: Simplify right side
    448,434.83x = 159,297,145,038.63
  5. Step 5: Solve for x
    x = 159,297,145,038.63/448,434.83
  6. Step 6: Final answer
    x = 355,229.20

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1.5x scale

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.