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Finding the Fourth Proportional to 582,666.40, 873,999.60 and 405,719.20

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Solution

The fourth proportional to 582,666.40, 873,999.60 and 405,719.20 is: 608,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,666.40 : 873,999.60 = 405,719.20 : x
  2. Step 2: Convert to fraction form
    582,666.40/873,999.60 = 405,719.20/x
  3. Step 3: Cross multiply
    582,666.40x = 873,999.60 × 405,719.20
  4. Step 4: Simplify right side
    582,666.40x = 354,598,418,512.32
  5. Step 5: Solve for x
    x = 354,598,418,512.32/582,666.40
  6. Step 6: Final answer
    x = 608,578.80

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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.