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Finding the Fourth Proportional to 127,502.91, 191,106.54 and 112,740.66

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Solution

The fourth proportional to 127,502.91, 191,106.54 and 112,740.66 is: 168,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,502.91 : 191,106.54 = 112,740.66 : x
  2. Step 2: Convert to fraction form
    127,502.91/191,106.54 = 112,740.66/x
  3. Step 3: Cross multiply
    127,502.91x = 191,106.54 × 112,740.66
  4. Step 4: Simplify right side
    127,502.91x = 21,545,477,449.92
  5. Step 5: Solve for x
    x = 21,545,477,449.92/127,502.91
  6. Step 6: Final answer
    x = 168,980.28

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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.