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Finding the Fourth Proportional to 311,368.68, 429,659.64 and 184,019.40

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Solution

The fourth proportional to 311,368.68, 429,659.64 and 184,019.40 is: 253,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,368.68 : 429,659.64 = 184,019.40 : x
  2. Step 2: Convert to fraction form
    311,368.68/429,659.64 = 184,019.40/x
  3. Step 3: Cross multiply
    311,368.68x = 429,659.64 × 184,019.40
  4. Step 4: Simplify right side
    311,368.68x = 79,065,709,157.02
  5. Step 5: Solve for x
    x = 79,065,709,157.02/311,368.68
  6. Step 6: Final answer
    x = 253,929.55

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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.