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Finding the Fourth Proportional to 86,714.40, 130,071.60 and 76,000.80

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Solution

The fourth proportional to 86,714.40, 130,071.60 and 76,000.80 is: 114,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,714.40 : 130,071.60 = 76,000.80 : x
  2. Step 2: Convert to fraction form
    86,714.40/130,071.60 = 76,000.80/x
  3. Step 3: Cross multiply
    86,714.40x = 130,071.60 × 76,000.80
  4. Step 4: Simplify right side
    86,714.40x = 9,885,545,657.28
  5. Step 5: Solve for x
    x = 9,885,545,657.28/86,714.40
  6. Step 6: Final answer
    x = 114,001.20

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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.