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Finding the Fourth Proportional to 186,348.48, 257,162.49 and 105,776.16

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Solution

The fourth proportional to 186,348.48, 257,162.49 and 105,776.16 is: 145,972.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,348.48 : 257,162.49 = 105,776.16 : x
  2. Step 2: Convert to fraction form
    186,348.48/257,162.49 = 105,776.16/x
  3. Step 3: Cross multiply
    186,348.48x = 257,162.49 × 105,776.16
  4. Step 4: Simplify right side
    186,348.48x = 27,201,660,688.24
  5. Step 5: Solve for x
    x = 27,201,660,688.24/186,348.48
  6. Step 6: Final answer
    x = 145,972.00

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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.