Finding the Fourth Proportional to 911,909.28, 1,257,782.14 and 640,037.84
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Solution
The fourth proportional to 911,909.28, 1,257,782.14 and 640,037.84 is: 882,794.14
Step by Step Solution
- Step 1: Write the proportion equation
911,909.28 : 1,257,782.14 = 640,037.84 : x - Step 2: Convert to fraction form
911,909.28/1,257,782.14 = 640,037.84/x - Step 3: Cross multiply
911,909.28x = 1,257,782.14 × 640,037.84 - Step 4: Simplify right side
911,909.28x = 805,028,164,076.18 - Step 5: Solve for x
x = 805,028,164,076.18/911,909.28 - Step 6: Final answer
x = 882,794.14
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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.