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Finding the Fourth Proportional to 104,810.71, 144,638.80 and 57,064.06

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Solution

The fourth proportional to 104,810.71, 144,638.80 and 57,064.06 is: 78,748.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,810.71 : 144,638.80 = 57,064.06 : x
  2. Step 2: Convert to fraction form
    104,810.71/144,638.80 = 57,064.06/x
  3. Step 3: Cross multiply
    104,810.71x = 144,638.80 × 57,064.06
  4. Step 4: Simplify right side
    104,810.71x = 8,253,677,161.53
  5. Step 5: Solve for x
    x = 8,253,677,161.53/104,810.71
  6. Step 6: Final answer
    x = 78,748.41

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1.5x scale

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.