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Finding the Fourth Proportional to 42,907.90, 59,212.92 and 26,140.90

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Solution

The fourth proportional to 42,907.90, 59,212.92 and 26,140.90 is: 36,074.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,907.90 : 59,212.92 = 26,140.90 : x
  2. Step 2: Convert to fraction form
    42,907.90/59,212.92 = 26,140.90/x
  3. Step 3: Cross multiply
    42,907.90x = 59,212.92 × 26,140.90
  4. Step 4: Simplify right side
    42,907.90x = 1,547,879,020.43
  5. Step 5: Solve for x
    x = 1,547,879,020.43/42,907.90
  6. Step 6: Final answer
    x = 36,074.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.