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Finding the Fourth Proportional to 98,561,515.68, 147,830,978.40 and 25,785,319.32

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Solution

The fourth proportional to 98,561,515.68, 147,830,978.40 and 25,785,319.32 is: 38,675,023.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,561,515.68 : 147,830,978.40 = 25,785,319.32 : x
  2. Step 2: Convert to fraction form
    98,561,515.68/147,830,978.40 = 25,785,319.32/x
  3. Step 3: Cross multiply
    98,561,515.68x = 147,830,978.40 × 25,785,319.32
  4. Step 4: Simplify right side
    98,561,515.68x = 3,811,868,983,432,023
  5. Step 5: Solve for x
    x = 3,811,868,983,432,023/98,561,515.68
  6. Step 6: Final answer
    x = 38,675,023.99

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.