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Finding the Fourth Proportional to 124,597.76, 171,967.20 and 74,300

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Solution

The fourth proportional to 124,597.76, 171,967.20 and 74,300 is: 102,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,597.76 : 171,967.20 = 74,300 : x
  2. Step 2: Convert to fraction form
    124,597.76/171,967.20 = 74,300/x
  3. Step 3: Cross multiply
    124,597.76x = 171,967.20 × 74,300
  4. Step 4: Simplify right side
    124,597.76x = 12,777,162,960
  5. Step 5: Solve for x
    x = 12,777,162,960/124,597.76
  6. Step 6: Final answer
    x = 102,547.29

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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.