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Finding the Fourth Proportional to 32,918,978.62, 45,428,555.19 and 18,234,870.13

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Solution

The fourth proportional to 32,918,978.62, 45,428,555.19 and 18,234,870.13 is: 25,164,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,918,978.62 : 45,428,555.19 = 18,234,870.13 : x
  2. Step 2: Convert to fraction form
    32,918,978.62/45,428,555.19 = 18,234,870.13/x
  3. Step 3: Cross multiply
    32,918,978.62x = 45,428,555.19 × 18,234,870.13
  4. Step 4: Simplify right side
    32,918,978.62x = 828,383,804,083,187.38
  5. Step 5: Solve for x
    x = 828,383,804,083,187.38/32,918,978.62
  6. Step 6: Final answer
    x = 25,164,322.80

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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.