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Finding the Fourth Proportional to 77,608,648.80, 116,412,973.20 and 26,492,335.20

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Solution

The fourth proportional to 77,608,648.80, 116,412,973.20 and 26,492,335.20 is: 39,738,502.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,608,648.80 : 116,412,973.20 = 26,492,335.20 : x
  2. Step 2: Convert to fraction form
    77,608,648.80/116,412,973.20 = 26,492,335.20/x
  3. Step 3: Cross multiply
    77,608,648.80x = 116,412,973.20 × 26,492,335.20
  4. Step 4: Simplify right side
    77,608,648.80x = 3,084,051,507,643,016.50
  5. Step 5: Solve for x
    x = 3,084,051,507,643,016.50/77,608,648.80
  6. Step 6: Final answer
    x = 39,738,502.80

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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.