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Finding the Fourth Proportional to 131,646.48, 181,483.20 and 93,855.12

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Solution

The fourth proportional to 131,646.48, 181,483.20 and 93,855.12 is: 129,385.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,646.48 : 181,483.20 = 93,855.12 : x
  2. Step 2: Convert to fraction form
    131,646.48/181,483.20 = 93,855.12/x
  3. Step 3: Cross multiply
    131,646.48x = 181,483.20 × 93,855.12
  4. Step 4: Simplify right side
    131,646.48x = 17,033,127,513.98
  5. Step 5: Solve for x
    x = 17,033,127,513.98/131,646.48
  6. Step 6: Final answer
    x = 129,385.36

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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.