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Finding the Fourth Proportional to 318,339.47, 477,457.30 and 93,647.36

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Solution

The fourth proportional to 318,339.47, 477,457.30 and 93,647.36 is: 140,455.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,339.47 : 477,457.30 = 93,647.36 : x
  2. Step 2: Convert to fraction form
    318,339.47/477,457.30 = 93,647.36/x
  3. Step 3: Cross multiply
    318,339.47x = 477,457.30 × 93,647.36
  4. Step 4: Simplify right side
    318,339.47x = 44,712,615,657.73
  5. Step 5: Solve for x
    x = 44,712,615,657.73/318,339.47
  6. Step 6: Final answer
    x = 140,455.77

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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.