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Finding the Fourth Proportional to 189,437.54, 261,419.81 and 103,393.67

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Solution

The fourth proportional to 189,437.54, 261,419.81 and 103,393.67 is: 142,681.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,437.54 : 261,419.81 = 103,393.67 : x
  2. Step 2: Convert to fraction form
    189,437.54/261,419.81 = 103,393.67/x
  3. Step 3: Cross multiply
    189,437.54x = 261,419.81 × 103,393.67
  4. Step 4: Simplify right side
    189,437.54x = 27,029,151,742.54
  5. Step 5: Solve for x
    x = 27,029,151,742.54/189,437.54
  6. Step 6: Final answer
    x = 142,681.08

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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.