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Finding the Fourth Proportional to 393,416.16, 589,127.72 and 243,948.38

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Solution

The fourth proportional to 393,416.16, 589,127.72 and 243,948.38 is: 365,304.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,416.16 : 589,127.72 = 243,948.38 : x
  2. Step 2: Convert to fraction form
    393,416.16/589,127.72 = 243,948.38/x
  3. Step 3: Cross multiply
    393,416.16x = 589,127.72 × 243,948.38
  4. Step 4: Simplify right side
    393,416.16x = 143,716,748,741.71
  5. Step 5: Solve for x
    x = 143,716,748,741.71/393,416.16
  6. Step 6: Final answer
    x = 365,304.64

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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.