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Finding the Fourth Proportional to 230,814.01, 318,539.35 and 128,859.51

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Solution

The fourth proportional to 230,814.01, 318,539.35 and 128,859.51 is: 177,835.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,814.01 : 318,539.35 = 128,859.51 : x
  2. Step 2: Convert to fraction form
    230,814.01/318,539.35 = 128,859.51/x
  3. Step 3: Cross multiply
    230,814.01x = 318,539.35 × 128,859.51
  4. Step 4: Simplify right side
    230,814.01x = 41,046,824,556.72
  5. Step 5: Solve for x
    x = 41,046,824,556.72/230,814.01
  6. Step 6: Final answer
    x = 177,835.07

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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.