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Finding the Fourth Proportional to 318,842.20, 440,022.14 and 175,602.20

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Solution

The fourth proportional to 318,842.20, 440,022.14 and 175,602.20 is: 242,342.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,842.20 : 440,022.14 = 175,602.20 : x
  2. Step 2: Convert to fraction form
    318,842.20/440,022.14 = 175,602.20/x
  3. Step 3: Cross multiply
    318,842.20x = 440,022.14 × 175,602.20
  4. Step 4: Simplify right side
    318,842.20x = 77,268,855,832.71
  5. Step 5: Solve for x
    x = 77,268,855,832.71/318,842.20
  6. Step 6: Final answer
    x = 242,342.00

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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.