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Finding the Fourth Proportional to 448,779.80, 619,254.84 and 257,793.18

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Solution

The fourth proportional to 448,779.80, 619,254.84 and 257,793.18 is: 355,719.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,779.80 : 619,254.84 = 257,793.18 : x
  2. Step 2: Convert to fraction form
    448,779.80/619,254.84 = 257,793.18/x
  3. Step 3: Cross multiply
    448,779.80x = 619,254.84 × 257,793.18
  4. Step 4: Simplify right side
    448,779.80x = 159,639,674,433.99
  5. Step 5: Solve for x
    x = 159,639,674,433.99/448,779.80
  6. Step 6: Final answer
    x = 355,719.38

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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.