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Finding the Fourth Proportional to 862,330.60, 1,205,688.20 and 862,330.60

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Solution

The fourth proportional to 862,330.60, 1,205,688.20 and 862,330.60 is: 1,205,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,330.60 : 1,205,688.20 = 862,330.60 : x
  2. Step 2: Convert to fraction form
    862,330.60/1,205,688.20 = 862,330.60/x
  3. Step 3: Cross multiply
    862,330.60x = 1,205,688.20 × 862,330.60
  4. Step 4: Simplify right side
    862,330.60x = 1,039,701,828,918.92
  5. Step 5: Solve for x
    x = 1,039,701,828,918.92/862,330.60
  6. Step 6: Final answer
    x = 1,205,688.20

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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.