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Finding the Fourth Proportional to 61,778.49, 92,666.71 and 19,661.12

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Solution

The fourth proportional to 61,778.49, 92,666.71 and 19,661.12 is: 29,491.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,778.49 : 92,666.71 = 19,661.12 : x
  2. Step 2: Convert to fraction form
    61,778.49/92,666.71 = 19,661.12/x
  3. Step 3: Cross multiply
    61,778.49x = 92,666.71 × 19,661.12
  4. Step 4: Simplify right side
    61,778.49x = 1,821,931,305.32
  5. Step 5: Solve for x
    x = 1,821,931,305.32/61,778.49
  6. Step 6: Final answer
    x = 29,491.35

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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.