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Finding the Fourth Proportional to 116,440.65, 160,705.12 and 65,457.58

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Solution

The fourth proportional to 116,440.65, 160,705.12 and 65,457.58 is: 90,341.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,440.65 : 160,705.12 = 65,457.58 : x
  2. Step 2: Convert to fraction form
    116,440.65/160,705.12 = 65,457.58/x
  3. Step 3: Cross multiply
    116,440.65x = 160,705.12 × 65,457.58
  4. Step 4: Simplify right side
    116,440.65x = 10,519,368,248.81
  5. Step 5: Solve for x
    x = 10,519,368,248.81/116,440.65
  6. Step 6: Final answer
    x = 90,341.03

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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.