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Finding the Fourth Proportional to 1,404,916.74, 1,938,787.47 and 760,337.58

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Solution

The fourth proportional to 1,404,916.74, 1,938,787.47 and 760,337.58 is: 1,049,267.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404,916.74 : 1,938,787.47 = 760,337.58 : x
  2. Step 2: Convert to fraction form
    1,404,916.74/1,938,787.47 = 760,337.58/x
  3. Step 3: Cross multiply
    1,404,916.74x = 1,938,787.47 × 760,337.58
  4. Step 4: Simplify right side
    1,404,916.74x = 1,474,132,973,074.12
  5. Step 5: Solve for x
    x = 1,474,132,973,074.12/1,404,916.74
  6. Step 6: Final answer
    x = 1,049,267.14

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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.