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Finding the Fourth Proportional to 529,628.40, 794,782.80 and 293,140.80

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Solution

The fourth proportional to 529,628.40, 794,782.80 and 293,140.80 is: 439,899.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,628.40 : 794,782.80 = 293,140.80 : x
  2. Step 2: Convert to fraction form
    529,628.40/794,782.80 = 293,140.80/x
  3. Step 3: Cross multiply
    529,628.40x = 794,782.80 × 293,140.80
  4. Step 4: Simplify right side
    529,628.40x = 232,983,265,818.24
  5. Step 5: Solve for x
    x = 232,983,265,818.24/529,628.40
  6. Step 6: Final answer
    x = 439,899.50

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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.