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Finding the Fourth Proportional to 189,432.66, 261,406.85 and 117,810.66

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Solution

The fourth proportional to 189,432.66, 261,406.85 and 117,810.66 is: 162,572.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,432.66 : 261,406.85 = 117,810.66 : x
  2. Step 2: Convert to fraction form
    189,432.66/261,406.85 = 117,810.66/x
  3. Step 3: Cross multiply
    189,432.66x = 261,406.85 × 117,810.66
  4. Step 4: Simplify right side
    189,432.66x = 30,796,513,527.02
  5. Step 5: Solve for x
    x = 30,796,513,527.02/189,432.66
  6. Step 6: Final answer
    x = 162,572.35

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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.