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Finding the Fourth Proportional to 92,731.80, 139,097.70 and 53,365.80

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Solution

The fourth proportional to 92,731.80, 139,097.70 and 53,365.80 is: 80,048.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,731.80 : 139,097.70 = 53,365.80 : x
  2. Step 2: Convert to fraction form
    92,731.80/139,097.70 = 53,365.80/x
  3. Step 3: Cross multiply
    92,731.80x = 139,097.70 × 53,365.80
  4. Step 4: Simplify right side
    92,731.80x = 7,423,060,038.66
  5. Step 5: Solve for x
    x = 7,423,060,038.66/92,731.80
  6. Step 6: Final answer
    x = 80,048.70

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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.