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Finding the Fourth Proportional to 866,625.93, 1,300,246.56 and 386,810.07

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Solution

The fourth proportional to 866,625.93, 1,300,246.56 and 386,810.07 is: 580,352.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,625.93 : 1,300,246.56 = 386,810.07 : x
  2. Step 2: Convert to fraction form
    866,625.93/1,300,246.56 = 386,810.07/x
  3. Step 3: Cross multiply
    866,625.93x = 1,300,246.56 × 386,810.07
  4. Step 4: Simplify right side
    866,625.93x = 502,948,462,890.86
  5. Step 5: Solve for x
    x = 502,948,462,890.86/866,625.93
  6. Step 6: Final answer
    x = 580,352.43

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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.