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Finding the Fourth Proportional to 125,842,648.90, 188,763,973.35 and 39,607,489.30

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Solution

The fourth proportional to 125,842,648.90, 188,763,973.35 and 39,607,489.30 is: 59,411,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,842,648.90 : 188,763,973.35 = 39,607,489.30 : x
  2. Step 2: Convert to fraction form
    125,842,648.90/188,763,973.35 = 39,607,489.30/x
  3. Step 3: Cross multiply
    125,842,648.90x = 188,763,973.35 × 39,607,489.30
  4. Step 4: Simplify right side
    125,842,648.90x = 7,476,467,054,685,609
  5. Step 5: Solve for x
    x = 7,476,467,054,685,609/125,842,648.90
  6. Step 6: Final answer
    x = 59,411,233.95

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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.