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Finding the Fourth Proportional to 841,618.80, 1,161,441.38 and 479,066

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Solution

The fourth proportional to 841,618.80, 1,161,441.38 and 479,066 is: 661,115.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,618.80 : 1,161,441.38 = 479,066 : x
  2. Step 2: Convert to fraction form
    841,618.80/1,161,441.38 = 479,066/x
  3. Step 3: Cross multiply
    841,618.80x = 1,161,441.38 × 479,066
  4. Step 4: Simplify right side
    841,618.80x = 556,407,076,151.08
  5. Step 5: Solve for x
    x = 556,407,076,151.08/841,618.80
  6. Step 6: Final answer
    x = 661,115.31

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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.