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Finding the Fourth Proportional to 641,551.60, 962,557.80 and 618,511.60

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Solution

The fourth proportional to 641,551.60, 962,557.80 and 618,511.60 is: 927,989.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,551.60 : 962,557.80 = 618,511.60 : x
  2. Step 2: Convert to fraction form
    641,551.60/962,557.80 = 618,511.60/x
  3. Step 3: Cross multiply
    641,551.60x = 962,557.80 × 618,511.60
  4. Step 4: Simplify right side
    641,551.60x = 595,353,164,970.48
  5. Step 5: Solve for x
    x = 595,353,164,970.48/641,551.60
  6. Step 6: Final answer
    x = 927,989.53

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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.