Finding the Fourth Proportional to 640,402.65, 883,840.14 and 619,372.62
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Solution
The fourth proportional to 640,402.65, 883,840.14 and 619,372.62 is: 854,815.92
Step by Step Solution
- Step 1: Write the proportion equation
640,402.65 : 883,840.14 = 619,372.62 : x - Step 2: Convert to fraction form
640,402.65/883,840.14 = 619,372.62/x - Step 3: Cross multiply
640,402.65x = 883,840.14 × 619,372.62 - Step 4: Simplify right side
640,402.65x = 547,426,383,172.97 - Step 5: Solve for x
x = 547,426,383,172.97/640,402.65 - Step 6: Final answer
x = 854,815.92
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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.