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Finding the Fourth Proportional to 922,348.75, 1,272,841.28 and 519,940.75

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Solution

The fourth proportional to 922,348.75, 1,272,841.28 and 519,940.75 is: 717,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,348.75 : 1,272,841.28 = 519,940.75 : x
  2. Step 2: Convert to fraction form
    922,348.75/1,272,841.28 = 519,940.75/x
  3. Step 3: Cross multiply
    922,348.75x = 1,272,841.28 × 519,940.75
  4. Step 4: Simplify right side
    922,348.75x = 661,802,047,154.46
  5. Step 5: Solve for x
    x = 661,802,047,154.46/922,348.75
  6. Step 6: Final answer
    x = 717,518.24

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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.