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Finding the Fourth Proportional to 212,384.80, 293,085.48 and 115,590.60

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Solution

The fourth proportional to 212,384.80, 293,085.48 and 115,590.60 is: 159,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,384.80 : 293,085.48 = 115,590.60 : x
  2. Step 2: Convert to fraction form
    212,384.80/293,085.48 = 115,590.60/x
  3. Step 3: Cross multiply
    212,384.80x = 293,085.48 × 115,590.60
  4. Step 4: Simplify right side
    212,384.80x = 33,877,926,484.49
  5. Step 5: Solve for x
    x = 33,877,926,484.49/212,384.80
  6. Step 6: Final answer
    x = 159,512.01

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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.