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Finding the Fourth Proportional to 621,095.61, 931,643.64 and 194,664.53

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Solution

The fourth proportional to 621,095.61, 931,643.64 and 194,664.53 is: 291,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,095.61 : 931,643.64 = 194,664.53 : x
  2. Step 2: Convert to fraction form
    621,095.61/931,643.64 = 194,664.53/x
  3. Step 3: Cross multiply
    621,095.61x = 931,643.64 × 194,664.53
  4. Step 4: Simplify right side
    621,095.61x = 181,357,966,649.87
  5. Step 5: Solve for x
    x = 181,357,966,649.87/621,095.61
  6. Step 6: Final answer
    x = 291,996.86

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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.