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Finding the Fourth Proportional to 310,364.84, 428,303.94 and 176,228.84

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Solution

The fourth proportional to 310,364.84, 428,303.94 and 176,228.84 is: 243,196.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,364.84 : 428,303.94 = 176,228.84 : x
  2. Step 2: Convert to fraction form
    310,364.84/428,303.94 = 176,228.84/x
  3. Step 3: Cross multiply
    310,364.84x = 428,303.94 × 176,228.84
  4. Step 4: Simplify right side
    310,364.84x = 75,479,506,513.63
  5. Step 5: Solve for x
    x = 75,479,506,513.63/310,364.84
  6. Step 6: Final answer
    x = 243,196.06

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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.