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Finding the Fourth Proportional to 96,422.40, 133,064.64 and 53,980.80

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Solution

The fourth proportional to 96,422.40, 133,064.64 and 53,980.80 is: 74,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,422.40 : 133,064.64 = 53,980.80 : x
  2. Step 2: Convert to fraction form
    96,422.40/133,064.64 = 53,980.80/x
  3. Step 3: Cross multiply
    96,422.40x = 133,064.64 × 53,980.80
  4. Step 4: Simplify right side
    96,422.40x = 7,182,935,718.91
  5. Step 5: Solve for x
    x = 7,182,935,718.91/96,422.40
  6. Step 6: Final answer
    x = 74,494.47

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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.