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Finding the Fourth Proportional to 594,630.10, 820,047 and 390,599.20

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Solution

The fourth proportional to 594,630.10, 820,047 and 390,599.20 is: 538,670.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    594,630.10 : 820,047 = 390,599.20 : x
  2. Step 2: Convert to fraction form
    594,630.10/820,047 = 390,599.20/x
  3. Step 3: Cross multiply
    594,630.10x = 820,047 × 390,599.20
  4. Step 4: Simplify right side
    594,630.10x = 320,309,702,162.40
  5. Step 5: Solve for x
    x = 320,309,702,162.40/594,630.10
  6. Step 6: Final answer
    x = 538,670.51

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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.