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Finding the Fourth Proportional to 191,316.23, 286,728.30 and 116,356.80

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Solution

The fourth proportional to 191,316.23, 286,728.30 and 116,356.80 is: 174,385.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,316.23 : 286,728.30 = 116,356.80 : x
  2. Step 2: Convert to fraction form
    191,316.23/286,728.30 = 116,356.80/x
  3. Step 3: Cross multiply
    191,316.23x = 286,728.30 × 116,356.80
  4. Step 4: Simplify right side
    191,316.23x = 33,362,787,457.44
  5. Step 5: Solve for x
    x = 33,362,787,457.44/191,316.23
  6. Step 6: Final answer
    x = 174,385.56

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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.