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Finding the Fourth Proportional to 98,398.99, 147,599.34 and 28,278.28

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Solution

The fourth proportional to 98,398.99, 147,599.34 and 28,278.28 is: 42,417.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,398.99 : 147,599.34 = 28,278.28 : x
  2. Step 2: Convert to fraction form
    98,398.99/147,599.34 = 28,278.28/x
  3. Step 3: Cross multiply
    98,398.99x = 147,599.34 × 28,278.28
  4. Step 4: Simplify right side
    98,398.99x = 4,173,855,464.34
  5. Step 5: Solve for x
    x = 4,173,855,464.34/98,398.99
  6. Step 6: Final answer
    x = 42,417.67

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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.