Finding the Fourth Proportional to 1,405,365.41, 1,938,927.42 and 915,111.09
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Solution
The fourth proportional to 1,405,365.41, 1,938,927.42 and 915,111.09 is: 1,262,542.81
Step by Step Solution
- Step 1: Write the proportion equation
1,405,365.41 : 1,938,927.42 = 915,111.09 : x - Step 2: Convert to fraction form
1,405,365.41/1,938,927.42 = 915,111.09/x - Step 3: Cross multiply
1,405,365.41x = 1,938,927.42 × 915,111.09 - Step 4: Simplify right side
1,405,365.41x = 1,774,333,984,747.09 - Step 5: Solve for x
x = 1,774,333,984,747.09/1,405,365.41 - Step 6: Final answer
x = 1,262,542.81
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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.