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Finding the Fourth Proportional to 185,724.40, 278,570.40 and 61,065.40

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Solution

The fourth proportional to 185,724.40, 278,570.40 and 61,065.40 is: 91,592.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,724.40 : 278,570.40 = 61,065.40 : x
  2. Step 2: Convert to fraction form
    185,724.40/278,570.40 = 61,065.40/x
  3. Step 3: Cross multiply
    185,724.40x = 278,570.40 × 61,065.40
  4. Step 4: Simplify right side
    185,724.40x = 17,011,012,904.16
  5. Step 5: Solve for x
    x = 17,011,012,904.16/185,724.40
  6. Step 6: Final answer
    x = 91,592.77

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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.