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Finding the Fourth Proportional to 92,988.73, 128,324.90 and 50,547.25

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Solution

The fourth proportional to 92,988.73, 128,324.90 and 50,547.25 is: 69,755.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,988.73 : 128,324.90 = 50,547.25 : x
  2. Step 2: Convert to fraction form
    92,988.73/128,324.90 = 50,547.25/x
  3. Step 3: Cross multiply
    92,988.73x = 128,324.90 × 50,547.25
  4. Step 4: Simplify right side
    92,988.73x = 6,486,470,801.53
  5. Step 5: Solve for x
    x = 6,486,470,801.53/92,988.73
  6. Step 6: Final answer
    x = 69,755.45

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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.