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Finding the Fourth Proportional to 93,784.81, 129,330.88 and 86,005.07

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Solution

The fourth proportional to 93,784.81, 129,330.88 and 86,005.07 is: 118,602.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,784.81 : 129,330.88 = 86,005.07 : x
  2. Step 2: Convert to fraction form
    93,784.81/129,330.88 = 86,005.07/x
  3. Step 3: Cross multiply
    93,784.81x = 129,330.88 × 86,005.07
  4. Step 4: Simplify right side
    93,784.81x = 11,123,111,387.56
  5. Step 5: Solve for x
    x = 11,123,111,387.56/93,784.81
  6. Step 6: Final answer
    x = 118,602.48

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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.