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Finding the Fourth Proportional to 316,779.66, 437,155.92 and 189,455.25

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Solution

The fourth proportional to 316,779.66, 437,155.92 and 189,455.25 is: 261,448.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,779.66 : 437,155.92 = 189,455.25 : x
  2. Step 2: Convert to fraction form
    316,779.66/437,155.92 = 189,455.25/x
  3. Step 3: Cross multiply
    316,779.66x = 437,155.92 × 189,455.25
  4. Step 4: Simplify right side
    316,779.66x = 82,821,484,112.58
  5. Step 5: Solve for x
    x = 82,821,484,112.58/316,779.66
  6. Step 6: Final answer
    x = 261,448.24

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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.