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Finding the Fourth Proportional to 863,321.60, 1,207,075.60 and 863,321.60

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Solution

The fourth proportional to 863,321.60, 1,207,075.60 and 863,321.60 is: 1,207,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,321.60 : 1,207,075.60 = 863,321.60 : x
  2. Step 2: Convert to fraction form
    863,321.60/1,207,075.60 = 863,321.60/x
  3. Step 3: Cross multiply
    863,321.60x = 1,207,075.60 × 863,321.60
  4. Step 4: Simplify right side
    863,321.60x = 1,042,094,438,312.96
  5. Step 5: Solve for x
    x = 1,042,094,438,312.96/863,321.60
  6. Step 6: Final answer
    x = 1,207,075.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.