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Finding the Fourth Proportional to 282,863.92, 390,347.88 and 153,801.36

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Solution

The fourth proportional to 282,863.92, 390,347.88 and 153,801.36 is: 212,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,863.92 : 390,347.88 = 153,801.36 : x
  2. Step 2: Convert to fraction form
    282,863.92/390,347.88 = 153,801.36/x
  3. Step 3: Cross multiply
    282,863.92x = 390,347.88 × 153,801.36
  4. Step 4: Simplify right side
    282,863.92x = 60,036,034,817.12
  5. Step 5: Solve for x
    x = 60,036,034,817.12/282,863.92
  6. Step 6: Final answer
    x = 212,243.52

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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.