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Finding the Fourth Proportional to 579,219.40, 867,662.70 and 401,926.60

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Solution

The fourth proportional to 579,219.40, 867,662.70 and 401,926.60 is: 602,080.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,219.40 : 867,662.70 = 401,926.60 : x
  2. Step 2: Convert to fraction form
    579,219.40/867,662.70 = 401,926.60/x
  3. Step 3: Cross multiply
    579,219.40x = 867,662.70 × 401,926.60
  4. Step 4: Simplify right side
    579,219.40x = 348,736,718,957.82
  5. Step 5: Solve for x
    x = 348,736,718,957.82/579,219.40
  6. Step 6: Final answer
    x = 602,080.52

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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.