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Finding the Fourth Proportional to 841,617.81, 1,161,440 and 479,065.01

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Solution

The fourth proportional to 841,617.81, 1,161,440 and 479,065.01 is: 661,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,617.81 : 1,161,440 = 479,065.01 : x
  2. Step 2: Convert to fraction form
    841,617.81/1,161,440 = 479,065.01/x
  3. Step 3: Cross multiply
    841,617.81x = 1,161,440 × 479,065.01
  4. Step 4: Simplify right side
    841,617.81x = 556,405,265,214.40
  5. Step 5: Solve for x
    x = 556,405,265,214.40/841,617.81
  6. Step 6: Final answer
    x = 661,113.94

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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.