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Finding the Fourth Proportional to 92,893.70, 128,246.45 and 61,154.87

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Solution

The fourth proportional to 92,893.70, 128,246.45 and 61,154.87 is: 84,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,893.70 : 128,246.45 = 61,154.87 : x
  2. Step 2: Convert to fraction form
    92,893.70/128,246.45 = 61,154.87/x
  3. Step 3: Cross multiply
    92,893.70x = 128,246.45 × 61,154.87
  4. Step 4: Simplify right side
    92,893.70x = 7,842,894,030.70
  5. Step 5: Solve for x
    x = 7,842,894,030.70/92,893.70
  6. Step 6: Final answer
    x = 84,428.69

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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.