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Finding the Fourth Proportional to 281,068.84, 387,875.15 and 153,744.13

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Solution

The fourth proportional to 281,068.84, 387,875.15 and 153,744.13 is: 212,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,068.84 : 387,875.15 = 153,744.13 : x
  2. Step 2: Convert to fraction form
    281,068.84/387,875.15 = 153,744.13/x
  3. Step 3: Cross multiply
    281,068.84x = 387,875.15 × 153,744.13
  4. Step 4: Simplify right side
    281,068.84x = 59,633,527,485.37
  5. Step 5: Solve for x
    x = 59,633,527,485.37/281,068.84
  6. Step 6: Final answer
    x = 212,166.98

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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.