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Finding the Fourth Proportional to 353,642.60, 530,118.30 and 316,317.80

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Solution

The fourth proportional to 353,642.60, 530,118.30 and 316,317.80 is: 474,167.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,642.60 : 530,118.30 = 316,317.80 : x
  2. Step 2: Convert to fraction form
    353,642.60/530,118.30 = 316,317.80/x
  3. Step 3: Cross multiply
    353,642.60x = 530,118.30 × 316,317.80
  4. Step 4: Simplify right side
    353,642.60x = 167,685,854,395.74
  5. Step 5: Solve for x
    x = 167,685,854,395.74/353,642.60
  6. Step 6: Final answer
    x = 474,167.58

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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.