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Finding the Fourth Proportional to 318,083.57, 438,950.40 and 174,840.53

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Solution

The fourth proportional to 318,083.57, 438,950.40 and 174,840.53 is: 241,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,083.57 : 438,950.40 = 174,840.53 : x
  2. Step 2: Convert to fraction form
    318,083.57/438,950.40 = 174,840.53/x
  3. Step 3: Cross multiply
    318,083.57x = 438,950.40 × 174,840.53
  4. Step 4: Simplify right side
    318,083.57x = 76,746,320,579.71
  5. Step 5: Solve for x
    x = 76,746,320,579.71/318,083.57
  6. Step 6: Final answer
    x = 241,277.22

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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.