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Finding the Fourth Proportional to 662,405.80, 993,608.70 and 556,117.60

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Solution

The fourth proportional to 662,405.80, 993,608.70 and 556,117.60 is: 834,176.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,405.80 : 993,608.70 = 556,117.60 : x
  2. Step 2: Convert to fraction form
    662,405.80/993,608.70 = 556,117.60/x
  3. Step 3: Cross multiply
    662,405.80x = 993,608.70 × 556,117.60
  4. Step 4: Simplify right side
    662,405.80x = 552,563,285,583.12
  5. Step 5: Solve for x
    x = 552,563,285,583.12/662,405.80
  6. Step 6: Final answer
    x = 834,176.40

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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.