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Finding the Fourth Proportional to 638,368.32, 957,692.55 and 189,124.32

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Solution

The fourth proportional to 638,368.32, 957,692.55 and 189,124.32 is: 283,727.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,368.32 : 957,692.55 = 189,124.32 : x
  2. Step 2: Convert to fraction form
    638,368.32/957,692.55 = 189,124.32/x
  3. Step 3: Cross multiply
    638,368.32x = 957,692.55 × 189,124.32
  4. Step 4: Simplify right side
    638,368.32x = 181,122,952,287.82
  5. Step 5: Solve for x
    x = 181,122,952,287.82/638,368.32
  6. Step 6: Final answer
    x = 283,727.98

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1.5x scale

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.