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Finding the Fourth Proportional to 59,929.40, 89,915.70 and 57,769.40

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Solution

The fourth proportional to 59,929.40, 89,915.70 and 57,769.40 is: 86,674.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,929.40 : 89,915.70 = 57,769.40 : x
  2. Step 2: Convert to fraction form
    59,929.40/89,915.70 = 57,769.40/x
  3. Step 3: Cross multiply
    59,929.40x = 89,915.70 × 57,769.40
  4. Step 4: Simplify right side
    59,929.40x = 5,194,376,039.58
  5. Step 5: Solve for x
    x = 5,194,376,039.58/59,929.40
  6. Step 6: Final answer
    x = 86,674.92

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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.