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Finding the Fourth Proportional to 496,518.90, 745,086.15 and 260,031.30

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Solution

The fourth proportional to 496,518.90, 745,086.15 and 260,031.30 is: 390,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,518.90 : 745,086.15 = 260,031.30 : x
  2. Step 2: Convert to fraction form
    496,518.90/745,086.15 = 260,031.30/x
  3. Step 3: Cross multiply
    496,518.90x = 745,086.15 × 260,031.30
  4. Step 4: Simplify right side
    496,518.90x = 193,745,720,196.50
  5. Step 5: Solve for x
    x = 193,745,720,196.50/496,518.90
  6. Step 6: Final answer
    x = 390,208.15

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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.