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Finding the Fourth Proportional to 281,284.88, 388,176.77 and 153,957.74

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Solution

The fourth proportional to 281,284.88, 388,176.77 and 153,957.74 is: 212,463.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,284.88 : 388,176.77 = 153,957.74 : x
  2. Step 2: Convert to fraction form
    281,284.88/388,176.77 = 153,957.74/x
  3. Step 3: Cross multiply
    281,284.88x = 388,176.77 × 153,957.74
  4. Step 4: Simplify right side
    281,284.88x = 59,762,816,673.71
  5. Step 5: Solve for x
    x = 59,762,816,673.71/281,284.88
  6. Step 6: Final answer
    x = 212,463.67

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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.