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Finding the Fourth Proportional to 1,281,661.63, 1,922,913.65 and 524,140.31

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Solution

The fourth proportional to 1,281,661.63, 1,922,913.65 and 524,140.31 is: 786,382.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,661.63 : 1,922,913.65 = 524,140.31 : x
  2. Step 2: Convert to fraction form
    1,281,661.63/1,922,913.65 = 524,140.31/x
  3. Step 3: Cross multiply
    1,281,661.63x = 1,922,913.65 × 524,140.31
  4. Step 4: Simplify right side
    1,281,661.63x = 1,007,876,553,993.53
  5. Step 5: Solve for x
    x = 1,007,876,553,993.53/1,281,661.63
  6. Step 6: Final answer
    x = 786,382.72

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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.