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Finding the Fourth Proportional to 65,349,643.60, 98,013,967.80 and 19,900,867.60

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Solution

The fourth proportional to 65,349,643.60, 98,013,967.80 and 19,900,867.60 is: 29,848,104.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,349,643.60 : 98,013,967.80 = 19,900,867.60 : x
  2. Step 2: Convert to fraction form
    65,349,643.60/98,013,967.80 = 19,900,867.60/x
  3. Step 3: Cross multiply
    65,349,643.60x = 98,013,967.80 × 19,900,867.60
  4. Step 4: Simplify right side
    65,349,643.60x = 1,950,562,996,138,463.25
  5. Step 5: Solve for x
    x = 1,950,562,996,138,463.25/65,349,643.60
  6. Step 6: Final answer
    x = 29,848,104.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.