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Finding the Fourth Proportional to 649,616.40, 973,042.20 and 525,200.40

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Solution

The fourth proportional to 649,616.40, 973,042.20 and 525,200.40 is: 786,682.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,616.40 : 973,042.20 = 525,200.40 : x
  2. Step 2: Convert to fraction form
    649,616.40/973,042.20 = 525,200.40/x
  3. Step 3: Cross multiply
    649,616.40x = 973,042.20 × 525,200.40
  4. Step 4: Simplify right side
    649,616.40x = 511,042,152,656.88
  5. Step 5: Solve for x
    x = 511,042,152,656.88/649,616.40
  6. Step 6: Final answer
    x = 786,682.96

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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.