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Finding the Fourth Proportional to 186,579.72, 257,477.40 and 101,697.12

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Solution

The fourth proportional to 186,579.72, 257,477.40 and 101,697.12 is: 140,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,579.72 : 257,477.40 = 101,697.12 : x
  2. Step 2: Convert to fraction form
    186,579.72/257,477.40 = 101,697.12/x
  3. Step 3: Cross multiply
    186,579.72x = 257,477.40 × 101,697.12
  4. Step 4: Simplify right side
    186,579.72x = 26,184,710,045.09
  5. Step 5: Solve for x
    x = 26,184,710,045.09/186,579.72
  6. Step 6: Final answer
    x = 140,340.60

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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.