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Finding the Fourth Proportional to 32,688.47, 45,112.07 and 18,353

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Solution

The fourth proportional to 32,688.47, 45,112.07 and 18,353 is: 25,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,688.47 : 45,112.07 = 18,353 : x
  2. Step 2: Convert to fraction form
    32,688.47/45,112.07 = 18,353/x
  3. Step 3: Cross multiply
    32,688.47x = 45,112.07 × 18,353
  4. Step 4: Simplify right side
    32,688.47x = 827,941,820.71
  5. Step 5: Solve for x
    x = 827,941,820.71/32,688.47
  6. Step 6: Final answer
    x = 25,328.25

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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.