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Finding the Fourth Proportional to 700,672.10, 1,051,008.15 and 543,208.10

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Solution

The fourth proportional to 700,672.10, 1,051,008.15 and 543,208.10 is: 814,812.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,672.10 : 1,051,008.15 = 543,208.10 : x
  2. Step 2: Convert to fraction form
    700,672.10/1,051,008.15 = 543,208.10/x
  3. Step 3: Cross multiply
    700,672.10x = 1,051,008.15 × 543,208.10
  4. Step 4: Simplify right side
    700,672.10x = 570,916,140,246.02
  5. Step 5: Solve for x
    x = 570,916,140,246.02/700,672.10
  6. Step 6: Final answer
    x = 814,812.15

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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.