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Finding the Fourth Proportional to 189,810.60, 284,715.90 and 119,999.40

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Solution

The fourth proportional to 189,810.60, 284,715.90 and 119,999.40 is: 179,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,810.60 : 284,715.90 = 119,999.40 : x
  2. Step 2: Convert to fraction form
    189,810.60/284,715.90 = 119,999.40/x
  3. Step 3: Cross multiply
    189,810.60x = 284,715.90 × 119,999.40
  4. Step 4: Simplify right side
    189,810.60x = 34,165,737,170.46
  5. Step 5: Solve for x
    x = 34,165,737,170.46/189,810.60
  6. Step 6: Final answer
    x = 179,999.10

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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.