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Finding the Fourth Proportional to 862,709.98, 1,190,399.76 and 500,063.01

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Solution

The fourth proportional to 862,709.98, 1,190,399.76 and 500,063.01 is: 690,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,709.98 : 1,190,399.76 = 500,063.01 : x
  2. Step 2: Convert to fraction form
    862,709.98/1,190,399.76 = 500,063.01/x
  3. Step 3: Cross multiply
    862,709.98x = 1,190,399.76 × 500,063.01
  4. Step 4: Simplify right side
    862,709.98x = 595,274,887,088.88
  5. Step 5: Solve for x
    x = 595,274,887,088.88/862,709.98
  6. Step 6: Final answer
    x = 690,005.80

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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.