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Finding the Fourth Proportional to 58,451,642.80, 87,689,905.80 and 18,066,209.20

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Solution

The fourth proportional to 58,451,642.80, 87,689,905.80 and 18,066,209.20 is: 27,103,159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,451,642.80 : 87,689,905.80 = 18,066,209.20 : x
  2. Step 2: Convert to fraction form
    58,451,642.80/87,689,905.80 = 18,066,209.20/x
  3. Step 3: Cross multiply
    58,451,642.80x = 87,689,905.80 × 18,066,209.20
  4. Step 4: Simplify right side
    58,451,642.80x = 1,584,224,182,911,093.25
  5. Step 5: Solve for x
    x = 1,584,224,182,911,093.25/58,451,642.80
  6. Step 6: Final answer
    x = 27,103,159.24

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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.