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Finding the Fourth Proportional to 185,814.60, 256,428.89 and 105,240.93

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Solution

The fourth proportional to 185,814.60, 256,428.89 and 105,240.93 is: 145,235.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,814.60 : 256,428.89 = 105,240.93 : x
  2. Step 2: Convert to fraction form
    185,814.60/256,428.89 = 105,240.93/x
  3. Step 3: Cross multiply
    185,814.60x = 256,428.89 × 105,240.93
  4. Step 4: Simplify right side
    185,814.60x = 26,986,814,862.47
  5. Step 5: Solve for x
    x = 26,986,814,862.47/185,814.60
  6. Step 6: Final answer
    x = 145,235.17

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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.