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Finding the Fourth Proportional to 124,703.87, 172,091.48 and 70,988.82

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Solution

The fourth proportional to 124,703.87, 172,091.48 and 70,988.82 is: 97,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,703.87 : 172,091.48 = 70,988.82 : x
  2. Step 2: Convert to fraction form
    124,703.87/172,091.48 = 70,988.82/x
  3. Step 3: Cross multiply
    124,703.87x = 172,091.48 × 70,988.82
  4. Step 4: Simplify right side
    124,703.87x = 12,216,570,742.31
  5. Step 5: Solve for x
    x = 12,216,570,742.31/124,703.87
  6. Step 6: Final answer
    x = 97,964.65

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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.