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Finding the Fourth Proportional to 1,263,788.65, 1,743,602.72 and 719,539.53

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Solution

The fourth proportional to 1,263,788.65, 1,743,602.72 and 719,539.53 is: 992,722.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,788.65 : 1,743,602.72 = 719,539.53 : x
  2. Step 2: Convert to fraction form
    1,263,788.65/1,743,602.72 = 719,539.53/x
  3. Step 3: Cross multiply
    1,263,788.65x = 1,743,602.72 × 719,539.53
  4. Step 4: Simplify right side
    1,263,788.65x = 1,254,591,072,937.51
  5. Step 5: Solve for x
    x = 1,254,591,072,937.51/1,263,788.65
  6. Step 6: Final answer
    x = 992,722.22

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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.