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Finding the Fourth Proportional to 255,095.70, 382,643.55 and 65,555.70

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Solution

The fourth proportional to 255,095.70, 382,643.55 and 65,555.70 is: 98,333.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,095.70 : 382,643.55 = 65,555.70 : x
  2. Step 2: Convert to fraction form
    255,095.70/382,643.55 = 65,555.70/x
  3. Step 3: Cross multiply
    255,095.70x = 382,643.55 × 65,555.70
  4. Step 4: Simplify right side
    255,095.70x = 25,084,465,770.74
  5. Step 5: Solve for x
    x = 25,084,465,770.74/255,095.70
  6. Step 6: Final answer
    x = 98,333.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.