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Finding the Fourth Proportional to 70,259,322.70, 96,955,782.87 and 38,898,769.51

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Solution

The fourth proportional to 70,259,322.70, 96,955,782.87 and 38,898,769.51 is: 53,679,148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,259,322.70 : 96,955,782.87 = 38,898,769.51 : x
  2. Step 2: Convert to fraction form
    70,259,322.70/96,955,782.87 = 38,898,769.51/x
  3. Step 3: Cross multiply
    70,259,322.70x = 96,955,782.87 × 38,898,769.51
  4. Step 4: Simplify right side
    70,259,322.70x = 3,771,460,650,521,736.50
  5. Step 5: Solve for x
    x = 3,771,460,650,521,736.50/70,259,322.70
  6. Step 6: Final answer
    x = 53,679,148.98

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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.