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Finding the Fourth Proportional to 520,135.17, 780,428.13 and 183,416.41

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Solution

The fourth proportional to 520,135.17, 780,428.13 and 183,416.41 is: 275,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,135.17 : 780,428.13 = 183,416.41 : x
  2. Step 2: Convert to fraction form
    520,135.17/780,428.13 = 183,416.41/x
  3. Step 3: Cross multiply
    520,135.17x = 780,428.13 × 183,416.41
  4. Step 4: Simplify right side
    520,135.17x = 143,143,325,867.61
  5. Step 5: Solve for x
    x = 143,143,325,867.61/520,135.17
  6. Step 6: Final answer
    x = 275,204.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.