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Finding the Fourth Proportional to 306,912.02, 423,559.88 and 186,058.40

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Solution

The fourth proportional to 306,912.02, 423,559.88 and 186,058.40 is: 256,773.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,912.02 : 423,559.88 = 186,058.40 : x
  2. Step 2: Convert to fraction form
    306,912.02/423,559.88 = 186,058.40/x
  3. Step 3: Cross multiply
    306,912.02x = 423,559.88 × 186,058.40
  4. Step 4: Simplify right side
    306,912.02x = 78,806,873,576.99
  5. Step 5: Solve for x
    x = 78,806,873,576.99/306,912.02
  6. Step 6: Final answer
    x = 256,773.50

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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.