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Finding the Fourth Proportional to 638,417.74, 957,766.71 and 189,173.77

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Solution

The fourth proportional to 638,417.74, 957,766.71 and 189,173.77 is: 283,802.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,417.74 : 957,766.71 = 189,173.77 : x
  2. Step 2: Convert to fraction form
    638,417.74/957,766.71 = 189,173.77/x
  3. Step 3: Cross multiply
    638,417.74x = 957,766.71 × 189,173.77
  4. Step 4: Simplify right side
    638,417.74x = 181,184,339,311.20
  5. Step 5: Solve for x
    x = 181,184,339,311.20/638,417.74
  6. Step 6: Final answer
    x = 283,802.17

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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.