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Finding the Fourth Proportional to 612,549.95, 918,824.92 and 191,858.63

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Solution

The fourth proportional to 612,549.95, 918,824.92 and 191,858.63 is: 287,787.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,549.95 : 918,824.92 = 191,858.63 : x
  2. Step 2: Convert to fraction form
    612,549.95/918,824.92 = 191,858.63/x
  3. Step 3: Cross multiply
    612,549.95x = 918,824.92 × 191,858.63
  4. Step 4: Simplify right side
    612,549.95x = 176,284,485,287.29
  5. Step 5: Solve for x
    x = 176,284,485,287.29/612,549.95
  6. Step 6: Final answer
    x = 287,787.94

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Similar ratio
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1.5x scale

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.