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Finding the Fourth Proportional to 404,645.42, 607,089.63 and 191,575.73

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Solution

The fourth proportional to 404,645.42, 607,089.63 and 191,575.73 is: 287,421.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,645.42 : 607,089.63 = 191,575.73 : x
  2. Step 2: Convert to fraction form
    404,645.42/607,089.63 = 191,575.73/x
  3. Step 3: Cross multiply
    404,645.42x = 607,089.63 × 191,575.73
  4. Step 4: Simplify right side
    404,645.42x = 116,303,641,278.81
  5. Step 5: Solve for x
    x = 116,303,641,278.81/404,645.42
  6. Step 6: Final answer
    x = 287,421.12

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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.