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Finding the Fourth Proportional to 401,155.17, 553,655.13 and 256,023.57

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Solution

The fourth proportional to 401,155.17, 553,655.13 and 256,023.57 is: 353,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,155.17 : 553,655.13 = 256,023.57 : x
  2. Step 2: Convert to fraction form
    401,155.17/553,655.13 = 256,023.57/x
  3. Step 3: Cross multiply
    401,155.17x = 553,655.13 × 256,023.57
  4. Step 4: Simplify right side
    401,155.17x = 141,748,762,931.41
  5. Step 5: Solve for x
    x = 141,748,762,931.41/401,155.17
  6. Step 6: Final answer
    x = 353,351.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.