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Finding the Fourth Proportional to 70,127,999.60, 105,191,999.40 and 41,387,903.60

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Solution

The fourth proportional to 70,127,999.60, 105,191,999.40 and 41,387,903.60 is: 62,081,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,127,999.60 : 105,191,999.40 = 41,387,903.60 : x
  2. Step 2: Convert to fraction form
    70,127,999.60/105,191,999.40 = 41,387,903.60/x
  3. Step 3: Cross multiply
    70,127,999.60x = 105,191,999.40 × 41,387,903.60
  4. Step 4: Simplify right side
    70,127,999.60x = 4,353,676,330,658,458
  5. Step 5: Solve for x
    x = 4,353,676,330,658,458/70,127,999.60
  6. Step 6: Final answer
    x = 62,081,855.40

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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.