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Finding the Fourth Proportional to 456,666.30, 630,452.84 and 275,423.94

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Solution

The fourth proportional to 456,666.30, 630,452.84 and 275,423.94 is: 380,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,666.30 : 630,452.84 = 275,423.94 : x
  2. Step 2: Convert to fraction form
    456,666.30/630,452.84 = 275,423.94/x
  3. Step 3: Cross multiply
    456,666.30x = 630,452.84 × 275,423.94
  4. Step 4: Simplify right side
    456,666.30x = 173,641,803,799.87
  5. Step 5: Solve for x
    x = 173,641,803,799.87/456,666.30
  6. Step 6: Final answer
    x = 380,237.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.