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Finding the Fourth Proportional to 661,683.78, 990,926.93 and 376,510.32

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Solution

The fourth proportional to 661,683.78, 990,926.93 and 376,510.32 is: 563,855.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,683.78 : 990,926.93 = 376,510.32 : x
  2. Step 2: Convert to fraction form
    661,683.78/990,926.93 = 376,510.32/x
  3. Step 3: Cross multiply
    661,683.78x = 990,926.93 × 376,510.32
  4. Step 4: Simplify right side
    661,683.78x = 373,094,216,452.19
  5. Step 5: Solve for x
    x = 373,094,216,452.19/661,683.78
  6. Step 6: Final answer
    x = 563,855.77

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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.