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Finding the Fourth Proportional to 92,875.65, 128,215.61 and 58,918.83

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Solution

The fourth proportional to 92,875.65, 128,215.61 and 58,918.83 is: 81,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,875.65 : 128,215.61 = 58,918.83 : x
  2. Step 2: Convert to fraction form
    92,875.65/128,215.61 = 58,918.83/x
  3. Step 3: Cross multiply
    92,875.65x = 128,215.61 × 58,918.83
  4. Step 4: Simplify right side
    92,875.65x = 7,554,313,728.94
  5. Step 5: Solve for x
    x = 7,554,313,728.94/92,875.65
  6. Step 6: Final answer
    x = 81,337.94

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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.