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Finding the Fourth Proportional to 170,028.40, 255,031.80 and 57,708.40

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Solution

The fourth proportional to 170,028.40, 255,031.80 and 57,708.40 is: 86,558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,028.40 : 255,031.80 = 57,708.40 : x
  2. Step 2: Convert to fraction form
    170,028.40/255,031.80 = 57,708.40/x
  3. Step 3: Cross multiply
    170,028.40x = 255,031.80 × 57,708.40
  4. Step 4: Simplify right side
    170,028.40x = 14,717,477,127.12
  5. Step 5: Solve for x
    x = 14,717,477,127.12/170,028.40
  6. Step 6: Final answer
    x = 86,558.93

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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.