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Finding the Fourth Proportional to 99,668,380.05, 149,502,570.08 and 99,668,380.05

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Solution

The fourth proportional to 99,668,380.05, 149,502,570.08 and 99,668,380.05 is: 149,502,570.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,668,380.05 : 149,502,570.08 = 99,668,380.05 : x
  2. Step 2: Convert to fraction form
    99,668,380.05/149,502,570.08 = 99,668,380.05/x
  3. Step 3: Cross multiply
    99,668,380.05x = 149,502,570.08 × 99,668,380.05
  4. Step 4: Simplify right side
    99,668,380.05x = 14,900,678,972,686,856
  5. Step 5: Solve for x
    x = 14,900,678,972,686,856/99,668,380.05
  6. Step 6: Final answer
    x = 149,502,570.08

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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.