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Finding the Fourth Proportional to 55,583.70, 77,972.70 and 55,583.70

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Solution

The fourth proportional to 55,583.70, 77,972.70 and 55,583.70 is: 77,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,583.70 : 77,972.70 = 55,583.70 : x
  2. Step 2: Convert to fraction form
    55,583.70/77,972.70 = 55,583.70/x
  3. Step 3: Cross multiply
    55,583.70x = 77,972.70 × 55,583.70
  4. Step 4: Simplify right side
    55,583.70x = 4,334,011,164.99
  5. Step 5: Solve for x
    x = 4,334,011,164.99/55,583.70
  6. Step 6: Final answer
    x = 77,972.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.