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Finding the Fourth Proportional to 368,853.32, 508,405.74 and 261,285.32

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Solution

The fourth proportional to 368,853.32, 508,405.74 and 261,285.32 is: 360,140.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,853.32 : 508,405.74 = 261,285.32 : x
  2. Step 2: Convert to fraction form
    368,853.32/508,405.74 = 261,285.32/x
  3. Step 3: Cross multiply
    368,853.32x = 508,405.74 × 261,285.32
  4. Step 4: Simplify right side
    368,853.32x = 132,838,956,465.74
  5. Step 5: Solve for x
    x = 132,838,956,465.74/368,853.32
  6. Step 6: Final answer
    x = 360,140.33

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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.