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Finding the Fourth Proportional to 93,855.51, 129,488.90 and 53,540.91

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Solution

The fourth proportional to 93,855.51, 129,488.90 and 53,540.91 is: 73,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,855.51 : 129,488.90 = 53,540.91 : x
  2. Step 2: Convert to fraction form
    93,855.51/129,488.90 = 53,540.91/x
  3. Step 3: Cross multiply
    93,855.51x = 129,488.90 × 53,540.91
  4. Step 4: Simplify right side
    93,855.51x = 6,932,953,273.19
  5. Step 5: Solve for x
    x = 6,932,953,273.19/93,855.51
  6. Step 6: Final answer
    x = 73,868.37

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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.