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Finding the Fourth Proportional to 101,706.88, 140,355.47 and 56,384.75

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Solution

The fourth proportional to 101,706.88, 140,355.47 and 56,384.75 is: 77,810.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,706.88 : 140,355.47 = 56,384.75 : x
  2. Step 2: Convert to fraction form
    101,706.88/140,355.47 = 56,384.75/x
  3. Step 3: Cross multiply
    101,706.88x = 140,355.47 × 56,384.75
  4. Step 4: Simplify right side
    101,706.88x = 7,913,908,087.08
  5. Step 5: Solve for x
    x = 7,913,908,087.08/101,706.88
  6. Step 6: Final answer
    x = 77,810.94

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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.