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Finding the Fourth Proportional to 612,733.61, 919,107.10 and 186,338.78

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Solution

The fourth proportional to 612,733.61, 919,107.10 and 186,338.78 is: 279,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,733.61 : 919,107.10 = 186,338.78 : x
  2. Step 2: Convert to fraction form
    612,733.61/919,107.10 = 186,338.78/x
  3. Step 3: Cross multiply
    612,733.61x = 919,107.10 × 186,338.78
  4. Step 4: Simplify right side
    612,733.61x = 171,265,294,787.38
  5. Step 5: Solve for x
    x = 171,265,294,787.38/612,733.61
  6. Step 6: Final answer
    x = 279,510.20

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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.