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Finding the Fourth Proportional to 170,032.90, 255,038.55 and 57,712.90

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Solution

The fourth proportional to 170,032.90, 255,038.55 and 57,712.90 is: 86,565.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,032.90 : 255,038.55 = 57,712.90 : x
  2. Step 2: Convert to fraction form
    170,032.90/255,038.55 = 57,712.90/x
  3. Step 3: Cross multiply
    170,032.90x = 255,038.55 × 57,712.90
  4. Step 4: Simplify right side
    170,032.90x = 14,719,014,332.30
  5. Step 5: Solve for x
    x = 14,719,014,332.30/170,032.90
  6. Step 6: Final answer
    x = 86,565.68

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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.