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Finding the Fourth Proportional to 141,157.76, 194,802.72 and 77,500.40

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Solution

The fourth proportional to 141,157.76, 194,802.72 and 77,500.40 is: 106,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,157.76 : 194,802.72 = 77,500.40 : x
  2. Step 2: Convert to fraction form
    141,157.76/194,802.72 = 77,500.40/x
  3. Step 3: Cross multiply
    141,157.76x = 194,802.72 × 77,500.40
  4. Step 4: Simplify right side
    141,157.76x = 15,097,288,721.09
  5. Step 5: Solve for x
    x = 15,097,288,721.09/141,157.76
  6. Step 6: Final answer
    x = 106,953.30

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1.5x scale

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.