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Finding the Fourth Proportional to 517,587.42, 776,505.71 and 218,153.64

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Solution

The fourth proportional to 517,587.42, 776,505.71 and 218,153.64 is: 327,282.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,587.42 : 776,505.71 = 218,153.64 : x
  2. Step 2: Convert to fraction form
    517,587.42/776,505.71 = 218,153.64/x
  3. Step 3: Cross multiply
    517,587.42x = 776,505.71 × 218,153.64
  4. Step 4: Simplify right side
    517,587.42x = 169,397,547,117.28
  5. Step 5: Solve for x
    x = 169,397,547,117.28/517,587.42
  6. Step 6: Final answer
    x = 327,282.97

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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.