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Finding the Fourth Proportional to 191,124.65, 263,735.79 and 105,078.98

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Solution

The fourth proportional to 191,124.65, 263,735.79 and 105,078.98 is: 145,000.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,124.65 : 263,735.79 = 105,078.98 : x
  2. Step 2: Convert to fraction form
    191,124.65/263,735.79 = 105,078.98/x
  3. Step 3: Cross multiply
    191,124.65x = 263,735.79 × 105,078.98
  4. Step 4: Simplify right side
    191,124.65x = 27,713,087,802.69
  5. Step 5: Solve for x
    x = 27,713,087,802.69/191,124.65
  6. Step 6: Final answer
    x = 145,000.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.