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Finding the Fourth Proportional to 1,017,719.77, 1,404,389.40 and 558,831.13

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Solution

The fourth proportional to 1,017,719.77, 1,404,389.40 and 558,831.13 is: 771,151.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017,719.77 : 1,404,389.40 = 558,831.13 : x
  2. Step 2: Convert to fraction form
    1,017,719.77/1,404,389.40 = 558,831.13/x
  3. Step 3: Cross multiply
    1,017,719.77x = 1,404,389.40 × 558,831.13
  4. Step 4: Simplify right side
    1,017,719.77x = 784,816,511,851.05
  5. Step 5: Solve for x
    x = 784,816,511,851.05/1,017,719.77
  6. Step 6: Final answer
    x = 771,151.88

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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.