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Finding the Fourth Proportional to 1,053,703, 1,453,770.75 and 645,379.17

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Solution

The fourth proportional to 1,053,703, 1,453,770.75 and 645,379.17 is: 890,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053,703 : 1,453,770.75 = 645,379.17 : x
  2. Step 2: Convert to fraction form
    1,053,703/1,453,770.75 = 645,379.17/x
  3. Step 3: Cross multiply
    1,053,703x = 1,453,770.75 × 645,379.17
  4. Step 4: Simplify right side
    1,053,703x = 938,233,360,005.28
  5. Step 5: Solve for x
    x = 938,233,360,005.28/1,053,703
  6. Step 6: Final answer
    x = 890,415.38

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1.5x scale

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.