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Finding the Fourth Proportional to 862,710.98, 1,190,401.14 and 500,064.01

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Solution

The fourth proportional to 862,710.98, 1,190,401.14 and 500,064.01 is: 690,007.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,710.98 : 1,190,401.14 = 500,064.01 : x
  2. Step 2: Convert to fraction form
    862,710.98/1,190,401.14 = 500,064.01/x
  3. Step 3: Cross multiply
    862,710.98x = 1,190,401.14 × 500,064.01
  4. Step 4: Simplify right side
    862,710.98x = 595,276,767,576.97
  5. Step 5: Solve for x
    x = 595,276,767,576.97/862,710.98
  6. Step 6: Final answer
    x = 690,007.18

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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.