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Finding the Fourth Proportional to 93,436.71, 128,938.55 and 53,153.79

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Solution

The fourth proportional to 93,436.71, 128,938.55 and 53,153.79 is: 73,349.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,436.71 : 128,938.55 = 53,153.79 : x
  2. Step 2: Convert to fraction form
    93,436.71/128,938.55 = 53,153.79/x
  3. Step 3: Cross multiply
    93,436.71x = 128,938.55 × 53,153.79
  4. Step 4: Simplify right side
    93,436.71x = 6,853,572,343.84
  5. Step 5: Solve for x
    x = 6,853,572,343.84/93,436.71
  6. Step 6: Final answer
    x = 73,349.89

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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.