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Finding the Fourth Proportional to 42,457.70, 63,686.55 and 22,774.70

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Solution

The fourth proportional to 42,457.70, 63,686.55 and 22,774.70 is: 34,162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,457.70 : 63,686.55 = 22,774.70 : x
  2. Step 2: Convert to fraction form
    42,457.70/63,686.55 = 22,774.70/x
  3. Step 3: Cross multiply
    42,457.70x = 63,686.55 × 22,774.70
  4. Step 4: Simplify right side
    42,457.70x = 1,450,442,070.29
  5. Step 5: Solve for x
    x = 1,450,442,070.29/42,457.70
  6. Step 6: Final answer
    x = 34,162.05

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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.