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Finding the Fourth Proportional to 385,360.80, 578,041.20 and 369,614.40

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Solution

The fourth proportional to 385,360.80, 578,041.20 and 369,614.40 is: 554,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,360.80 : 578,041.20 = 369,614.40 : x
  2. Step 2: Convert to fraction form
    385,360.80/578,041.20 = 369,614.40/x
  3. Step 3: Cross multiply
    385,360.80x = 578,041.20 × 369,614.40
  4. Step 4: Simplify right side
    385,360.80x = 213,652,351,313.28
  5. Step 5: Solve for x
    x = 213,652,351,313.28/385,360.80
  6. Step 6: Final answer
    x = 554,421.60

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