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Finding the Fourth Proportional to 1,404,569.12, 1,938,291.12 and 759,975.20

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Solution

The fourth proportional to 1,404,569.12, 1,938,291.12 and 759,975.20 is: 1,048,758.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404,569.12 : 1,938,291.12 = 759,975.20 : x
  2. Step 2: Convert to fraction form
    1,404,569.12/1,938,291.12 = 759,975.20/x
  3. Step 3: Cross multiply
    1,404,569.12x = 1,938,291.12 × 759,975.20
  4. Step 4: Simplify right side
    1,404,569.12x = 1,473,053,181,580.22
  5. Step 5: Solve for x
    x = 1,473,053,181,580.22/1,404,569.12
  6. Step 6: Final answer
    x = 1,048,758.06

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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.