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Finding the Fourth Proportional to 117,264.40, 161,816.88 and 74,818.24

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Solution

The fourth proportional to 117,264.40, 161,816.88 and 74,818.24 is: 103,244.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,264.40 : 161,816.88 = 74,818.24 : x
  2. Step 2: Convert to fraction form
    117,264.40/161,816.88 = 74,818.24/x
  3. Step 3: Cross multiply
    117,264.40x = 161,816.88 × 74,818.24
  4. Step 4: Simplify right side
    117,264.40x = 12,106,854,163.89
  5. Step 5: Solve for x
    x = 12,106,854,163.89/117,264.40
  6. Step 6: Final answer
    x = 103,244.07

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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.