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Finding the Fourth Proportional to 620,686.08, 931,184.64 and 199,952.64

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Solution

The fourth proportional to 620,686.08, 931,184.64 and 199,952.64 is: 299,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,686.08 : 931,184.64 = 199,952.64 : x
  2. Step 2: Convert to fraction form
    620,686.08/931,184.64 = 199,952.64/x
  3. Step 3: Cross multiply
    620,686.08x = 931,184.64 × 199,952.64
  4. Step 4: Simplify right side
    620,686.08x = 186,192,827,095.45
  5. Step 5: Solve for x
    x = 186,192,827,095.45/620,686.08
  6. Step 6: Final answer
    x = 299,979.06

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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.