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Finding the Fourth Proportional to 1,398,370.07, 1,928,654.38 and 957,106.19

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Solution

The fourth proportional to 1,398,370.07, 1,928,654.38 and 957,106.19 is: 1,320,056.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,370.07 : 1,928,654.38 = 957,106.19 : x
  2. Step 2: Convert to fraction form
    1,398,370.07/1,928,654.38 = 957,106.19/x
  3. Step 3: Cross multiply
    1,398,370.07x = 1,928,654.38 × 957,106.19
  4. Step 4: Simplify right side
    1,398,370.07x = 1,845,927,045,468.61
  5. Step 5: Solve for x
    x = 1,845,927,045,468.61/1,398,370.07
  6. Step 6: Final answer
    x = 1,320,056.17

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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.