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Finding the Fourth Proportional to 281,528.52, 388,509.45 and 154,208.70

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Solution

The fourth proportional to 281,528.52, 388,509.45 and 154,208.70 is: 212,808.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,528.52 : 388,509.45 = 154,208.70 : x
  2. Step 2: Convert to fraction form
    281,528.52/388,509.45 = 154,208.70/x
  3. Step 3: Cross multiply
    281,528.52x = 388,509.45 × 154,208.70
  4. Step 4: Simplify right side
    281,528.52x = 59,911,537,222.22
  5. Step 5: Solve for x
    x = 59,911,537,222.22/281,528.52
  6. Step 6: Final answer
    x = 212,808.06

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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.