Home / 28,763,781.68-39,693,755.78-15,711,036.68

Finding the Fourth Proportional to 28,763,781.68, 39,693,755.78 and 15,711,036.68

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Solution

The fourth proportional to 28,763,781.68, 39,693,755.78 and 15,711,036.68 is: 21,681,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763,781.68 : 39,693,755.78 = 15,711,036.68 : x
  2. Step 2: Convert to fraction form
    28,763,781.68/39,693,755.78 = 15,711,036.68/x
  3. Step 3: Cross multiply
    28,763,781.68x = 39,693,755.78 × 15,711,036.68
  4. Step 4: Simplify right side
    28,763,781.68x = 623,630,052,828,073.25
  5. Step 5: Solve for x
    x = 623,630,052,828,073.25/28,763,781.68
  6. Step 6: Final answer
    x = 21,681,087.00

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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.