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Finding the Fourth Proportional to 144,562.20, 216,881.10 and 55,818.60

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Solution

The fourth proportional to 144,562.20, 216,881.10 and 55,818.60 is: 83,742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,562.20 : 216,881.10 = 55,818.60 : x
  2. Step 2: Convert to fraction form
    144,562.20/216,881.10 = 55,818.60/x
  3. Step 3: Cross multiply
    144,562.20x = 216,881.10 × 55,818.60
  4. Step 4: Simplify right side
    144,562.20x = 12,105,999,368.46
  5. Step 5: Solve for x
    x = 12,105,999,368.46/144,562.20
  6. Step 6: Final answer
    x = 83,742.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.