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Finding the Fourth Proportional to 69,045.59, 103,570.67 and 19,126.19

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Solution

The fourth proportional to 69,045.59, 103,570.67 and 19,126.19 is: 28,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,045.59 : 103,570.67 = 19,126.19 : x
  2. Step 2: Convert to fraction form
    69,045.59/103,570.67 = 19,126.19/x
  3. Step 3: Cross multiply
    69,045.59x = 103,570.67 × 19,126.19
  4. Step 4: Simplify right side
    69,045.59x = 1,980,911,842.81
  5. Step 5: Solve for x
    x = 1,980,911,842.81/69,045.59
  6. Step 6: Final answer
    x = 28,689.91

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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.