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Finding the Fourth Proportional to 86,567.40, 129,851.10 and 76,199.40

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Solution

The fourth proportional to 86,567.40, 129,851.10 and 76,199.40 is: 114,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,567.40 : 129,851.10 = 76,199.40 : x
  2. Step 2: Convert to fraction form
    86,567.40/129,851.10 = 76,199.40/x
  3. Step 3: Cross multiply
    86,567.40x = 129,851.10 × 76,199.40
  4. Step 4: Simplify right side
    86,567.40x = 9,894,575,909.34
  5. Step 5: Solve for x
    x = 9,894,575,909.34/86,567.40
  6. Step 6: Final answer
    x = 114,299.10

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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.