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Finding the Fourth Proportional to 92,813.50, 139,041.06 and 55,403.47

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Solution

The fourth proportional to 92,813.50, 139,041.06 and 55,403.47 is: 82,998.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,813.50 : 139,041.06 = 55,403.47 : x
  2. Step 2: Convert to fraction form
    92,813.50/139,041.06 = 55,403.47/x
  3. Step 3: Cross multiply
    92,813.50x = 139,041.06 × 55,403.47
  4. Step 4: Simplify right side
    92,813.50x = 7,703,357,196.48
  5. Step 5: Solve for x
    x = 7,703,357,196.48/92,813.50
  6. Step 6: Final answer
    x = 82,998.24

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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.