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Finding the Fourth Proportional to 286,807.80, 395,804.40 and 157,756.23

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Solution

The fourth proportional to 286,807.80, 395,804.40 and 157,756.23 is: 217,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,807.80 : 395,804.40 = 157,756.23 : x
  2. Step 2: Convert to fraction form
    286,807.80/395,804.40 = 157,756.23/x
  3. Step 3: Cross multiply
    286,807.80x = 395,804.40 × 157,756.23
  4. Step 4: Simplify right side
    286,807.80x = 62,440,609,961.41
  5. Step 5: Solve for x
    x = 62,440,609,961.41/286,807.80
  6. Step 6: Final answer
    x = 217,708.90

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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.