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Finding the Fourth Proportional to 448,645.17, 619,226.14 and 257,763.81

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Solution

The fourth proportional to 448,645.17, 619,226.14 and 257,763.81 is: 355,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,645.17 : 619,226.14 = 257,763.81 : x
  2. Step 2: Convert to fraction form
    448,645.17/619,226.14 = 257,763.81/x
  3. Step 3: Cross multiply
    448,645.17x = 619,226.14 × 257,763.81
  4. Step 4: Simplify right side
    448,645.17x = 159,614,089,097.99
  5. Step 5: Solve for x
    x = 159,614,089,097.99/448,645.17
  6. Step 6: Final answer
    x = 355,769.10

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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.