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Finding the Fourth Proportional to 529,541.40, 792,368.10 and 389,573.40

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Solution

The fourth proportional to 529,541.40, 792,368.10 and 389,573.40 is: 582,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,541.40 : 792,368.10 = 389,573.40 : x
  2. Step 2: Convert to fraction form
    529,541.40/792,368.10 = 389,573.40/x
  3. Step 3: Cross multiply
    529,541.40x = 792,368.10 × 389,573.40
  4. Step 4: Simplify right side
    529,541.40x = 308,685,534,768.54
  5. Step 5: Solve for x
    x = 308,685,534,768.54/529,541.40
  6. Step 6: Final answer
    x = 582,929.94

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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.