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Finding the Fourth Proportional to 191,970.49, 287,832.70 and 79,728.19

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Solution

The fourth proportional to 191,970.49, 287,832.70 and 79,728.19 is: 119,541.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,970.49 : 287,832.70 = 79,728.19 : x
  2. Step 2: Convert to fraction form
    191,970.49/287,832.70 = 79,728.19/x
  3. Step 3: Cross multiply
    191,970.49x = 287,832.70 × 79,728.19
  4. Step 4: Simplify right side
    191,970.49x = 22,948,380,193.81
  5. Step 5: Solve for x
    x = 22,948,380,193.81/191,970.49
  6. Step 6: Final answer
    x = 119,541.19

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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.