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Finding the Fourth Proportional to 189,059.15, 260,898.54 and 103,019.17

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Solution

The fourth proportional to 189,059.15, 260,898.54 and 103,019.17 is: 142,164.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,059.15 : 260,898.54 = 103,019.17 : x
  2. Step 2: Convert to fraction form
    189,059.15/260,898.54 = 103,019.17/x
  3. Step 3: Cross multiply
    189,059.15x = 260,898.54 × 103,019.17
  4. Step 4: Simplify right side
    189,059.15x = 26,877,551,045.01
  5. Step 5: Solve for x
    x = 26,877,551,045.01/189,059.15
  6. Step 6: Final answer
    x = 142,164.77

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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.