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Finding the Fourth Proportional to 282,665.73, 389,903.60 and 185,880.65

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Solution

The fourth proportional to 282,665.73, 389,903.60 and 185,880.65 is: 256,400.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,665.73 : 389,903.60 = 185,880.65 : x
  2. Step 2: Convert to fraction form
    282,665.73/389,903.60 = 185,880.65/x
  3. Step 3: Cross multiply
    282,665.73x = 389,903.60 × 185,880.65
  4. Step 4: Simplify right side
    282,665.73x = 72,475,535,070.04
  5. Step 5: Solve for x
    x = 72,475,535,070.04/282,665.73
  6. Step 6: Final answer
    x = 256,400.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.