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Finding the Fourth Proportional to 111,854.51, 154,354.68 and 64,074.63

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Solution

The fourth proportional to 111,854.51, 154,354.68 and 64,074.63 is: 88,420.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,854.51 : 154,354.68 = 64,074.63 : x
  2. Step 2: Convert to fraction form
    111,854.51/154,354.68 = 64,074.63/x
  3. Step 3: Cross multiply
    111,854.51x = 154,354.68 × 64,074.63
  4. Step 4: Simplify right side
    111,854.51x = 9,890,219,009.77
  5. Step 5: Solve for x
    x = 9,890,219,009.77/111,854.51
  6. Step 6: Final answer
    x = 88,420.39

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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.