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Finding the Fourth Proportional to 93,555.60, 129,061.72 and 68,022.40

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Solution

The fourth proportional to 93,555.60, 129,061.72 and 68,022.40 is: 93,838.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,555.60 : 129,061.72 = 68,022.40 : x
  2. Step 2: Convert to fraction form
    93,555.60/129,061.72 = 68,022.40/x
  3. Step 3: Cross multiply
    93,555.60x = 129,061.72 × 68,022.40
  4. Step 4: Simplify right side
    93,555.60x = 8,779,087,942.53
  5. Step 5: Solve for x
    x = 8,779,087,942.53/93,555.60
  6. Step 6: Final answer
    x = 93,838.19

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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.