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Finding the Fourth Proportional to 470,971,885.40, 706,477,308.80 and 138,978,899.36

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Solution

The fourth proportional to 470,971,885.40, 706,477,308.80 and 138,978,899.36 is: 208,474,097.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,971,885.40 : 706,477,308.80 = 138,978,899.36 : x
  2. Step 2: Convert to fraction form
    470,971,885.40/706,477,308.80 = 138,978,899.36/x
  3. Step 3: Cross multiply
    470,971,885.40x = 706,477,308.80 × 138,978,899.36
  4. Step 4: Simplify right side
    470,971,885.40x = 98,185,438,799,838,848
  5. Step 5: Solve for x
    x = 98,185,438,799,838,848/470,971,885.40
  6. Step 6: Final answer
    x = 208,474,097.59

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