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Finding the Fourth Proportional to 418,191.61, 627,602.88 and 193,709.54

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Solution

The fourth proportional to 418,191.61, 627,602.88 and 193,709.54 is: 290,710.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,191.61 : 627,602.88 = 193,709.54 : x
  2. Step 2: Convert to fraction form
    418,191.61/627,602.88 = 193,709.54/x
  3. Step 3: Cross multiply
    418,191.61x = 627,602.88 × 193,709.54
  4. Step 4: Simplify right side
    418,191.61x = 121,572,667,482.89
  5. Step 5: Solve for x
    x = 121,572,667,482.89/418,191.61
  6. Step 6: Final answer
    x = 290,710.44

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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.