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Finding the Fourth Proportional to 98,889,780.80, 148,397,656.80 and 57,949,140.80

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Solution

The fourth proportional to 98,889,780.80, 148,397,656.80 and 57,949,140.80 is: 86,960,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,889,780.80 : 148,397,656.80 = 57,949,140.80 : x
  2. Step 2: Convert to fraction form
    98,889,780.80/148,397,656.80 = 57,949,140.80/x
  3. Step 3: Cross multiply
    98,889,780.80x = 148,397,656.80 × 57,949,140.80
  4. Step 4: Simplify right side
    98,889,780.80x = 8,599,516,708,293,278
  5. Step 5: Solve for x
    x = 8,599,516,708,293,278/98,889,780.80
  6. Step 6: Final answer
    x = 86,960,620.59

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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.