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Finding the Fourth Proportional to 186,740.64, 257,697.72 and 101,858.40

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Solution

The fourth proportional to 186,740.64, 257,697.72 and 101,858.40 is: 140,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,740.64 : 257,697.72 = 101,858.40 : x
  2. Step 2: Convert to fraction form
    186,740.64/257,697.72 = 101,858.40/x
  3. Step 3: Cross multiply
    186,740.64x = 257,697.72 × 101,858.40
  4. Step 4: Simplify right side
    186,740.64x = 26,248,677,442.85
  5. Step 5: Solve for x
    x = 26,248,677,442.85/186,740.64
  6. Step 6: Final answer
    x = 140,562.21

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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.