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Finding the Fourth Proportional to 42,666.40, 63,980.40 and 16,362.40

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Solution

The fourth proportional to 42,666.40, 63,980.40 and 16,362.40 is: 24,536.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,666.40 : 63,980.40 = 16,362.40 : x
  2. Step 2: Convert to fraction form
    42,666.40/63,980.40 = 16,362.40/x
  3. Step 3: Cross multiply
    42,666.40x = 63,980.40 × 16,362.40
  4. Step 4: Simplify right side
    42,666.40x = 1,046,872,896.96
  5. Step 5: Solve for x
    x = 1,046,872,896.96/42,666.40
  6. Step 6: Final answer
    x = 24,536.24

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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.