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Finding the Fourth Proportional to 530,054.40, 731,589.12 and 348,782.88

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Solution

The fourth proportional to 530,054.40, 731,589.12 and 348,782.88 is: 481,395.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,054.40 : 731,589.12 = 348,782.88 : x
  2. Step 2: Convert to fraction form
    530,054.40/731,589.12 = 348,782.88/x
  3. Step 3: Cross multiply
    530,054.40x = 731,589.12 × 348,782.88
  4. Step 4: Simplify right side
    530,054.40x = 255,165,760,250.27
  5. Step 5: Solve for x
    x = 255,165,760,250.27/530,054.40
  6. Step 6: Final answer
    x = 481,395.42

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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.