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Finding the Fourth Proportional to 66,903.66, 92,278.71 and 56,816.19

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Solution

The fourth proportional to 66,903.66, 92,278.71 and 56,816.19 is: 78,365.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,903.66 : 92,278.71 = 56,816.19 : x
  2. Step 2: Convert to fraction form
    66,903.66/92,278.71 = 56,816.19/x
  3. Step 3: Cross multiply
    66,903.66x = 92,278.71 × 56,816.19
  4. Step 4: Simplify right side
    66,903.66x = 5,242,924,720.31
  5. Step 5: Solve for x
    x = 5,242,924,720.31/66,903.66
  6. Step 6: Final answer
    x = 78,365.29

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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.