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Finding the Fourth Proportional to 520,119.49, 780,241.77 and 183,090.15

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Solution

The fourth proportional to 520,119.49, 780,241.77 and 183,090.15 is: 274,657.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,119.49 : 780,241.77 = 183,090.15 : x
  2. Step 2: Convert to fraction form
    520,119.49/780,241.77 = 183,090.15/x
  3. Step 3: Cross multiply
    520,119.49x = 780,241.77 × 183,090.15
  4. Step 4: Simplify right side
    520,119.49x = 142,854,582,705.57
  5. Step 5: Solve for x
    x = 142,854,582,705.57/520,119.49
  6. Step 6: Final answer
    x = 274,657.24

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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.