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Finding the Fourth Proportional to 115,053, 172,330.21 and 55,764.64

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Solution

The fourth proportional to 115,053, 172,330.21 and 55,764.64 is: 83,526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,053 : 172,330.21 = 55,764.64 : x
  2. Step 2: Convert to fraction form
    115,053/172,330.21 = 55,764.64/x
  3. Step 3: Cross multiply
    115,053x = 172,330.21 × 55,764.64
  4. Step 4: Simplify right side
    115,053x = 9,609,932,121.77
  5. Step 5: Solve for x
    x = 9,609,932,121.77/115,053
  6. Step 6: Final answer
    x = 83,526.13

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1.5x scale

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.