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Finding the Fourth Proportional to 93,047.61, 128,406.54 and 55,314.57

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Solution

The fourth proportional to 93,047.61, 128,406.54 and 55,314.57 is: 76,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,047.61 : 128,406.54 = 55,314.57 : x
  2. Step 2: Convert to fraction form
    93,047.61/128,406.54 = 55,314.57/x
  3. Step 3: Cross multiply
    93,047.61x = 128,406.54 × 55,314.57
  4. Step 4: Simplify right side
    93,047.61x = 7,102,752,545.29
  5. Step 5: Solve for x
    x = 7,102,752,545.29/93,047.61
  6. Step 6: Final answer
    x = 76,334.60

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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.