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Finding the Fourth Proportional to 32,457.20, 48,666.60 and 16,905.20

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Solution

The fourth proportional to 32,457.20, 48,666.60 and 16,905.20 is: 25,347.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,457.20 : 48,666.60 = 16,905.20 : x
  2. Step 2: Convert to fraction form
    32,457.20/48,666.60 = 16,905.20/x
  3. Step 3: Cross multiply
    32,457.20x = 48,666.60 × 16,905.20
  4. Step 4: Simplify right side
    32,457.20x = 822,718,606.32
  5. Step 5: Solve for x
    x = 822,718,606.32/32,457.20
  6. Step 6: Final answer
    x = 25,347.80

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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.