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Finding the Fourth Proportional to 286,820.80, 430,085.40 and 168,528.40

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Solution

The fourth proportional to 286,820.80, 430,085.40 and 168,528.40 is: 252,706.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,820.80 : 430,085.40 = 168,528.40 : x
  2. Step 2: Convert to fraction form
    286,820.80/430,085.40 = 168,528.40/x
  3. Step 3: Cross multiply
    286,820.80x = 430,085.40 × 168,528.40
  4. Step 4: Simplify right side
    286,820.80x = 72,481,604,325.36
  5. Step 5: Solve for x
    x = 72,481,604,325.36/286,820.80
  6. Step 6: Final answer
    x = 252,706.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.