Home / 289,799.85-434,649.96-76,570.05

Finding the Fourth Proportional to 289,799.85, 434,649.96 and 76,570.05

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Solution

The fourth proportional to 289,799.85, 434,649.96 and 76,570.05 is: 114,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,799.85 : 434,649.96 = 76,570.05 : x
  2. Step 2: Convert to fraction form
    289,799.85/434,649.96 = 76,570.05/x
  3. Step 3: Cross multiply
    289,799.85x = 434,649.96 × 76,570.05
  4. Step 4: Simplify right side
    289,799.85x = 33,281,169,169.70
  5. Step 5: Solve for x
    x = 33,281,169,169.70/289,799.85
  6. Step 6: Final answer
    x = 114,841.91

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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.