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Finding the Fourth Proportional to 63,018.66, 86,971.88 and 47,075.43

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Solution

The fourth proportional to 63,018.66, 86,971.88 and 47,075.43 is: 64,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,018.66 : 86,971.88 = 47,075.43 : x
  2. Step 2: Convert to fraction form
    63,018.66/86,971.88 = 47,075.43/x
  3. Step 3: Cross multiply
    63,018.66x = 86,971.88 × 47,075.43
  4. Step 4: Simplify right side
    63,018.66x = 4,094,238,648.91
  5. Step 5: Solve for x
    x = 4,094,238,648.91/63,018.66
  6. Step 6: Final answer
    x = 64,968.67

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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.