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Finding the Fourth Proportional to 261,316.35, 360,623.61 and 153,866.61

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Solution

The fourth proportional to 261,316.35, 360,623.61 and 153,866.61 is: 212,340.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,316.35 : 360,623.61 = 153,866.61 : x
  2. Step 2: Convert to fraction form
    261,316.35/360,623.61 = 153,866.61/x
  3. Step 3: Cross multiply
    261,316.35x = 360,623.61 × 153,866.61
  4. Step 4: Simplify right side
    261,316.35x = 55,487,932,356.66
  5. Step 5: Solve for x
    x = 55,487,932,356.66/261,316.35
  6. Step 6: Final answer
    x = 212,340.07

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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.