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Finding the Fourth Proportional to 281,271.34, 388,154.44 and 153,946.93

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Solution

The fourth proportional to 281,271.34, 388,154.44 and 153,946.93 is: 212,446.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,271.34 : 388,154.44 = 153,946.93 : x
  2. Step 2: Convert to fraction form
    281,271.34/388,154.44 = 153,946.93/x
  3. Step 3: Cross multiply
    281,271.34x = 388,154.44 × 153,946.93
  4. Step 4: Simplify right side
    281,271.34x = 59,755,184,403.87
  5. Step 5: Solve for x
    x = 59,755,184,403.87/281,271.34
  6. Step 6: Final answer
    x = 212,446.76

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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.