Home / 12,771,617.90-19,171,423.65-7,984,712.30

Finding the Fourth Proportional to 12,771,617.90, 19,171,423.65 and 7,984,712.30

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Solution

The fourth proportional to 12,771,617.90, 19,171,423.65 and 7,984,712.30 is: 11,985,819.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771,617.90 : 19,171,423.65 = 7,984,712.30 : x
  2. Step 2: Convert to fraction form
    12,771,617.90/19,171,423.65 = 7,984,712.30/x
  3. Step 3: Cross multiply
    12,771,617.90x = 19,171,423.65 × 7,984,712.30
  4. Step 4: Simplify right side
    12,771,617.90x = 153,078,302,226,665.88
  5. Step 5: Solve for x
    x = 153,078,302,226,665.88/12,771,617.90
  6. Step 6: Final answer
    x = 11,985,819.14

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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.