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Finding the Fourth Proportional to 92,920.40, 128,335.55 and 62,653.53

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Solution

The fourth proportional to 92,920.40, 128,335.55 and 62,653.53 is: 86,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,920.40 : 128,335.55 = 62,653.53 : x
  2. Step 2: Convert to fraction form
    92,920.40/128,335.55 = 62,653.53/x
  3. Step 3: Cross multiply
    92,920.40x = 128,335.55 × 62,653.53
  4. Step 4: Simplify right side
    92,920.40x = 8,040,674,918.72
  5. Step 5: Solve for x
    x = 8,040,674,918.72/92,920.40
  6. Step 6: Final answer
    x = 86,532.94

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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.