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Finding the Fourth Proportional to 1,929,472.80, 2,662,497.99 and 1,070,030.40

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Solution

The fourth proportional to 1,929,472.80, 2,662,497.99 and 1,070,030.40 is: 1,476,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929,472.80 : 2,662,497.99 = 1,070,030.40 : x
  2. Step 2: Convert to fraction form
    1,929,472.80/2,662,497.99 = 1,070,030.40/x
  3. Step 3: Cross multiply
    1,929,472.80x = 2,662,497.99 × 1,070,030.40
  4. Step 4: Simplify right side
    1,929,472.80x = 2,848,953,789,238.90
  5. Step 5: Solve for x
    x = 2,848,953,789,238.90/1,929,472.80
  6. Step 6: Final answer
    x = 1,476,545.19

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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.