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Finding the Fourth Proportional to 170,036.40, 255,043.80 and 57,716.40

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Solution

The fourth proportional to 170,036.40, 255,043.80 and 57,716.40 is: 86,570.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,036.40 : 255,043.80 = 57,716.40 : x
  2. Step 2: Convert to fraction form
    170,036.40/255,043.80 = 57,716.40/x
  3. Step 3: Cross multiply
    170,036.40x = 255,043.80 × 57,716.40
  4. Step 4: Simplify right side
    170,036.40x = 14,720,209,978.32
  5. Step 5: Solve for x
    x = 14,720,209,978.32/170,036.40
  6. Step 6: Final answer
    x = 86,570.93

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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.