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Finding the Fourth Proportional to 455,459.41, 683,189.93 and 139,914.19

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Solution

The fourth proportional to 455,459.41, 683,189.93 and 139,914.19 is: 209,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,459.41 : 683,189.93 = 139,914.19 : x
  2. Step 2: Convert to fraction form
    455,459.41/683,189.93 = 139,914.19/x
  3. Step 3: Cross multiply
    455,459.41x = 683,189.93 × 139,914.19
  4. Step 4: Simplify right side
    455,459.41x = 95,587,965,672.11
  5. Step 5: Solve for x
    x = 95,587,965,672.11/455,459.41
  6. Step 6: Final answer
    x = 209,871.54

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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.