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Finding the Fourth Proportional to 286,677.63, 430,017.39 and 86,999.67

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Solution

The fourth proportional to 286,677.63, 430,017.39 and 86,999.67 is: 130,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,677.63 : 430,017.39 = 86,999.67 : x
  2. Step 2: Convert to fraction form
    286,677.63/430,017.39 = 86,999.67/x
  3. Step 3: Cross multiply
    286,677.63x = 430,017.39 × 86,999.67
  4. Step 4: Simplify right side
    286,677.63x = 37,411,371,024.26
  5. Step 5: Solve for x
    x = 37,411,371,024.26/286,677.63
  6. Step 6: Final answer
    x = 130,499.79

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Similar ratio
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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.