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Finding the Fourth Proportional to 282,289.68, 389,561.40 and 154,966.32

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Solution

The fourth proportional to 282,289.68, 389,561.40 and 154,966.32 is: 213,854.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,289.68 : 389,561.40 = 154,966.32 : x
  2. Step 2: Convert to fraction form
    282,289.68/389,561.40 = 154,966.32/x
  3. Step 3: Cross multiply
    282,289.68x = 389,561.40 × 154,966.32
  4. Step 4: Simplify right side
    282,289.68x = 60,368,896,572.05
  5. Step 5: Solve for x
    x = 60,368,896,572.05/282,289.68
  6. Step 6: Final answer
    x = 213,854.42

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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.