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Finding the Fourth Proportional to 1,319,700.80, 1,978,749.30 and 520,060.70

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Solution

The fourth proportional to 1,319,700.80, 1,978,749.30 and 520,060.70 is: 779,775.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,700.80 : 1,978,749.30 = 520,060.70 : x
  2. Step 2: Convert to fraction form
    1,319,700.80/1,978,749.30 = 520,060.70/x
  3. Step 3: Cross multiply
    1,319,700.80x = 1,978,749.30 × 520,060.70
  4. Step 4: Simplify right side
    1,319,700.80x = 1,029,069,746,082.51
  5. Step 5: Solve for x
    x = 1,029,069,746,082.51/1,319,700.80
  6. Step 6: Final answer
    x = 779,775.04

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