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Finding the Fourth Proportional to 922,325.50, 1,272,809.19 and 519,917.50

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Solution

The fourth proportional to 922,325.50, 1,272,809.19 and 519,917.50 is: 717,486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,325.50 : 1,272,809.19 = 519,917.50 : x
  2. Step 2: Convert to fraction form
    922,325.50/1,272,809.19 = 519,917.50/x
  3. Step 3: Cross multiply
    922,325.50x = 1,272,809.19 × 519,917.50
  4. Step 4: Simplify right side
    922,325.50x = 661,755,772,041.83
  5. Step 5: Solve for x
    x = 661,755,772,041.83/922,325.50
  6. Step 6: Final answer
    x = 717,486.15

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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.