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Finding the Fourth Proportional to 103,546.70, 155,320.05 and 97,714.70

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Solution

The fourth proportional to 103,546.70, 155,320.05 and 97,714.70 is: 146,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,546.70 : 155,320.05 = 97,714.70 : x
  2. Step 2: Convert to fraction form
    103,546.70/155,320.05 = 97,714.70/x
  3. Step 3: Cross multiply
    103,546.70x = 155,320.05 × 97,714.70
  4. Step 4: Simplify right side
    103,546.70x = 15,177,052,089.74
  5. Step 5: Solve for x
    x = 15,177,052,089.74/103,546.70
  6. Step 6: Final answer
    x = 146,572.05

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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.