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Finding the Fourth Proportional to 127,955.15, 191,925.78 and 39,208.91

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Solution

The fourth proportional to 127,955.15, 191,925.78 and 39,208.91 is: 58,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,955.15 : 191,925.78 = 39,208.91 : x
  2. Step 2: Convert to fraction form
    127,955.15/191,925.78 = 39,208.91/x
  3. Step 3: Cross multiply
    127,955.15x = 191,925.78 × 39,208.91
  4. Step 4: Simplify right side
    127,955.15x = 7,525,199,675.07
  5. Step 5: Solve for x
    x = 7,525,199,675.07/127,955.15
  6. Step 6: Final answer
    x = 58,811.23

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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.