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Finding the Fourth Proportional to 922,008.54, 1,272,340.34 and 508,561.70

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Solution

The fourth proportional to 922,008.54, 1,272,340.34 and 508,561.70 is: 701,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,008.54 : 1,272,340.34 = 508,561.70 : x
  2. Step 2: Convert to fraction form
    922,008.54/1,272,340.34 = 508,561.70/x
  3. Step 3: Cross multiply
    922,008.54x = 1,272,340.34 × 508,561.70
  4. Step 4: Simplify right side
    922,008.54x = 647,063,566,288.98
  5. Step 5: Solve for x
    x = 647,063,566,288.98/922,008.54
  6. Step 6: Final answer
    x = 701,797.80

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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.