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Finding the Fourth Proportional to 525,869.80, 788,804.70 and 245,415.40

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Solution

The fourth proportional to 525,869.80, 788,804.70 and 245,415.40 is: 368,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,869.80 : 788,804.70 = 245,415.40 : x
  2. Step 2: Convert to fraction form
    525,869.80/788,804.70 = 245,415.40/x
  3. Step 3: Cross multiply
    525,869.80x = 788,804.70 × 245,415.40
  4. Step 4: Simplify right side
    525,869.80x = 193,584,820,972.38
  5. Step 5: Solve for x
    x = 193,584,820,972.38/525,869.80
  6. Step 6: Final answer
    x = 368,123.10

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Similar ratio
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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.