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Finding the Fourth Proportional to 93,037.79, 128,428.64 and 65,955.42

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Solution

The fourth proportional to 93,037.79, 128,428.64 and 65,955.42 is: 91,044.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,037.79 : 128,428.64 = 65,955.42 : x
  2. Step 2: Convert to fraction form
    93,037.79/128,428.64 = 65,955.42/x
  3. Step 3: Cross multiply
    93,037.79x = 128,428.64 × 65,955.42
  4. Step 4: Simplify right side
    93,037.79x = 8,470,564,561.45
  5. Step 5: Solve for x
    x = 8,470,564,561.45/93,037.79
  6. Step 6: Final answer
    x = 91,044.35

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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.