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Finding the Fourth Proportional to 119,451,441.60, 164,754,978.21 and 90,084,011.94

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Solution

The fourth proportional to 119,451,441.60, 164,754,978.21 and 90,084,011.94 is: 124,249,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,451,441.60 : 164,754,978.21 = 90,084,011.94 : x
  2. Step 2: Convert to fraction form
    119,451,441.60/164,754,978.21 = 90,084,011.94/x
  3. Step 3: Cross multiply
    119,451,441.60x = 164,754,978.21 × 90,084,011.94
  4. Step 4: Simplify right side
    119,451,441.60x = 14,841,789,424,244,080
  5. Step 5: Solve for x
    x = 14,841,789,424,244,080/119,451,441.60
  6. Step 6: Final answer
    x = 124,249,563.05

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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.