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Finding the Fourth Proportional to 147,638.48, 221,535.48 and 64,590.80

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Solution

The fourth proportional to 147,638.48, 221,535.48 and 64,590.80 is: 96,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,638.48 : 221,535.48 = 64,590.80 : x
  2. Step 2: Convert to fraction form
    147,638.48/221,535.48 = 64,590.80/x
  3. Step 3: Cross multiply
    147,638.48x = 221,535.48 × 64,590.80
  4. Step 4: Simplify right side
    147,638.48x = 14,309,153,881.58
  5. Step 5: Solve for x
    x = 14,309,153,881.58/147,638.48
  6. Step 6: Final answer
    x = 96,920.22

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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.