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Finding the Fourth Proportional to 104,253.54, 143,870.14 and 56,506.84

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Solution

The fourth proportional to 104,253.54, 143,870.14 and 56,506.84 is: 77,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,253.54 : 143,870.14 = 56,506.84 : x
  2. Step 2: Convert to fraction form
    104,253.54/143,870.14 = 56,506.84/x
  3. Step 3: Cross multiply
    104,253.54x = 143,870.14 × 56,506.84
  4. Step 4: Simplify right side
    104,253.54x = 8,129,646,981.76
  5. Step 5: Solve for x
    x = 8,129,646,981.76/104,253.54
  6. Step 6: Final answer
    x = 77,979.58

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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.