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Finding the Fourth Proportional to 99,748,622.80, 149,717,412.60 and 61,484,870.80

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Solution

The fourth proportional to 99,748,622.80, 149,717,412.60 and 61,484,870.80 is: 92,285,542.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,748,622.80 : 149,717,412.60 = 61,484,870.80 : x
  2. Step 2: Convert to fraction form
    99,748,622.80/149,717,412.60 = 61,484,870.80/x
  3. Step 3: Cross multiply
    99,748,622.80x = 149,717,412.60 × 61,484,870.80
  4. Step 4: Simplify right side
    99,748,622.80x = 9,205,355,770,221,292
  5. Step 5: Solve for x
    x = 9,205,355,770,221,292/99,748,622.80
  6. Step 6: Final answer
    x = 92,285,542.51

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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.