Home / 191,623.80-287,435.70-189,780.60

Finding the Fourth Proportional to 191,623.80, 287,435.70 and 189,780.60

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Solution

The fourth proportional to 191,623.80, 287,435.70 and 189,780.60 is: 284,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,623.80 : 287,435.70 = 189,780.60 : x
  2. Step 2: Convert to fraction form
    191,623.80/287,435.70 = 189,780.60/x
  3. Step 3: Cross multiply
    191,623.80x = 287,435.70 × 189,780.60
  4. Step 4: Simplify right side
    191,623.80x = 54,549,719,607.42
  5. Step 5: Solve for x
    x = 54,549,719,607.42/191,623.80
  6. Step 6: Final answer
    x = 284,670.90

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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.