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Finding the Fourth Proportional to 286,656.93, 430,005.65 and 86,993.55

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Solution

The fourth proportional to 286,656.93, 430,005.65 and 86,993.55 is: 130,496.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,656.93 : 430,005.65 = 86,993.55 : x
  2. Step 2: Convert to fraction form
    286,656.93/430,005.65 = 86,993.55/x
  3. Step 3: Cross multiply
    286,656.93x = 430,005.65 × 86,993.55
  4. Step 4: Simplify right side
    286,656.93x = 37,407,717,578.59
  5. Step 5: Solve for x
    x = 37,407,717,578.59/286,656.93
  6. Step 6: Final answer
    x = 130,496.47

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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.