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Finding the Fourth Proportional to 289,349.83, 399,291.76 and 162,019.05

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Solution

The fourth proportional to 289,349.83, 399,291.76 and 162,019.05 is: 223,580.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,349.83 : 399,291.76 = 162,019.05 : x
  2. Step 2: Convert to fraction form
    289,349.83/399,291.76 = 162,019.05/x
  3. Step 3: Cross multiply
    289,349.83x = 399,291.76 × 162,019.05
  4. Step 4: Simplify right side
    289,349.83x = 64,692,871,628.03
  5. Step 5: Solve for x
    x = 64,692,871,628.03/289,349.83
  6. Step 6: Final answer
    x = 223,580.13

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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.