Home / 287,069.20-430,554.12-87,341.20

Finding the Fourth Proportional to 287,069.20, 430,554.12 and 87,341.20

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Solution

The fourth proportional to 287,069.20, 430,554.12 and 87,341.20 is: 130,996.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,069.20 : 430,554.12 = 87,341.20 : x
  2. Step 2: Convert to fraction form
    287,069.20/430,554.12 = 87,341.20/x
  3. Step 3: Cross multiply
    287,069.20x = 430,554.12 × 87,341.20
  4. Step 4: Simplify right side
    287,069.20x = 37,605,113,505.74
  5. Step 5: Solve for x
    x = 37,605,113,505.74/287,069.20
  6. Step 6: Final answer
    x = 130,996.68

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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.