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Finding the Fourth Proportional to 93,903.57, 129,529.35 and 76,700.93

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Solution

The fourth proportional to 93,903.57, 129,529.35 and 76,700.93 is: 105,800.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,903.57 : 129,529.35 = 76,700.93 : x
  2. Step 2: Convert to fraction form
    93,903.57/129,529.35 = 76,700.93/x
  3. Step 3: Cross multiply
    93,903.57x = 129,529.35 × 76,700.93
  4. Step 4: Simplify right side
    93,903.57x = 9,935,021,721.82
  5. Step 5: Solve for x
    x = 9,935,021,721.82/93,903.57
  6. Step 6: Final answer
    x = 105,800.26

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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.