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Finding the Fourth Proportional to 93,809.61, 129,455.97 and 51,368.15

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Solution

The fourth proportional to 93,809.61, 129,455.97 and 51,368.15 is: 70,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,809.61 : 129,455.97 = 51,368.15 : x
  2. Step 2: Convert to fraction form
    93,809.61/129,455.97 = 51,368.15/x
  3. Step 3: Cross multiply
    93,809.61x = 129,455.97 × 51,368.15
  4. Step 4: Simplify right side
    93,809.61x = 6,649,913,685.36
  5. Step 5: Solve for x
    x = 6,649,913,685.36/93,809.61
  6. Step 6: Final answer
    x = 70,887.34

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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.