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Finding the Fourth Proportional to 92,962.73, 128,285.90 and 52,689.50

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Solution

The fourth proportional to 92,962.73, 128,285.90 and 52,689.50 is: 72,709.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,962.73 : 128,285.90 = 52,689.50 : x
  2. Step 2: Convert to fraction form
    92,962.73/128,285.90 = 52,689.50/x
  3. Step 3: Cross multiply
    92,962.73x = 128,285.90 × 52,689.50
  4. Step 4: Simplify right side
    92,962.73x = 6,759,319,023.17
  5. Step 5: Solve for x
    x = 6,759,319,023.17/92,962.73
  6. Step 6: Final answer
    x = 72,709.99

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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.