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Finding the Fourth Proportional to 498,368.09, 686,300.59 and 432,926.90

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Solution

The fourth proportional to 498,368.09, 686,300.59 and 432,926.90 is: 596,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,368.09 : 686,300.59 = 432,926.90 : x
  2. Step 2: Convert to fraction form
    498,368.09/686,300.59 = 432,926.90/x
  3. Step 3: Cross multiply
    498,368.09x = 686,300.59 × 432,926.90
  4. Step 4: Simplify right side
    498,368.09x = 297,117,988,205.98
  5. Step 5: Solve for x
    x = 297,117,988,205.98/498,368.09
  6. Step 6: Final answer
    x = 596,181.80

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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.