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Finding the Fourth Proportional to 431,184.02, 646,870.68 and 127,554.40

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Solution

The fourth proportional to 431,184.02, 646,870.68 and 127,554.40 is: 191,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,184.02 : 646,870.68 = 127,554.40 : x
  2. Step 2: Convert to fraction form
    431,184.02/646,870.68 = 127,554.40/x
  3. Step 3: Cross multiply
    431,184.02x = 646,870.68 × 127,554.40
  4. Step 4: Simplify right side
    431,184.02x = 82,511,202,273.58
  5. Step 5: Solve for x
    x = 82,511,202,273.58/431,184.02
  6. Step 6: Final answer
    x = 191,359.60

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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.