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Finding the Fourth Proportional to 127,967.80, 191,706.90 and 68,783.80

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Solution

The fourth proportional to 127,967.80, 191,706.90 and 68,783.80 is: 103,044.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.80 : 191,706.90 = 68,783.80 : x
  2. Step 2: Convert to fraction form
    127,967.80/191,706.90 = 68,783.80/x
  3. Step 3: Cross multiply
    127,967.80x = 191,706.90 × 68,783.80
  4. Step 4: Simplify right side
    127,967.80x = 13,186,329,068.22
  5. Step 5: Solve for x
    x = 13,186,329,068.22/127,967.80
  6. Step 6: Final answer
    x = 103,044.12

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1.5x scale

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.