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Finding the Fourth Proportional to 147,555.90, 221,362.65 and 63,315.90

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Solution

The fourth proportional to 147,555.90, 221,362.65 and 63,315.90 is: 94,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,555.90 : 221,362.65 = 63,315.90 : x
  2. Step 2: Convert to fraction form
    147,555.90/221,362.65 = 63,315.90/x
  3. Step 3: Cross multiply
    147,555.90x = 221,362.65 × 63,315.90
  4. Step 4: Simplify right side
    147,555.90x = 14,015,775,411.14
  5. Step 5: Solve for x
    x = 14,015,775,411.14/147,555.90
  6. Step 6: Final answer
    x = 94,986.21

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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.