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Finding the Fourth Proportional to 611,677.80, 917,516.82 and 190,989.72

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Solution

The fourth proportional to 611,677.80, 917,516.82 and 190,989.72 is: 286,484.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,677.80 : 917,516.82 = 190,989.72 : x
  2. Step 2: Convert to fraction form
    611,677.80/917,516.82 = 190,989.72/x
  3. Step 3: Cross multiply
    611,677.80x = 917,516.82 × 190,989.72
  4. Step 4: Simplify right side
    611,677.80x = 175,236,280,547.09
  5. Step 5: Solve for x
    x = 175,236,280,547.09/611,677.80
  6. Step 6: Final answer
    x = 286,484.62

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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.