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Finding the Fourth Proportional to 1,409,653.93, 1,945,323.48 and 765,073.95

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Solution

The fourth proportional to 1,409,653.93, 1,945,323.48 and 765,073.95 is: 1,055,802.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,653.93 : 1,945,323.48 = 765,073.95 : x
  2. Step 2: Convert to fraction form
    1,409,653.93/1,945,323.48 = 765,073.95/x
  3. Step 3: Cross multiply
    1,409,653.93x = 1,945,323.48 × 765,073.95
  4. Step 4: Simplify right side
    1,409,653.93x = 1,488,316,318,871.35
  5. Step 5: Solve for x
    x = 1,488,316,318,871.35/1,409,653.93
  6. Step 6: Final answer
    x = 1,055,802.62

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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.