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Finding the Fourth Proportional to 566,710, 782,059.80 and 312,060.60

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Solution

The fourth proportional to 566,710, 782,059.80 and 312,060.60 is: 430,643.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,710 : 782,059.80 = 312,060.60 : x
  2. Step 2: Convert to fraction form
    566,710/782,059.80 = 312,060.60/x
  3. Step 3: Cross multiply
    566,710x = 782,059.80 × 312,060.60
  4. Step 4: Simplify right side
    566,710x = 244,050,050,423.88
  5. Step 5: Solve for x
    x = 244,050,050,423.88/566,710
  6. Step 6: Final answer
    x = 430,643.63

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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.