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Finding the Fourth Proportional to 411,256.80, 615,502.80 and 286,840.80

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Solution

The fourth proportional to 411,256.80, 615,502.80 and 286,840.80 is: 429,297.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,256.80 : 615,502.80 = 286,840.80 : x
  2. Step 2: Convert to fraction form
    411,256.80/615,502.80 = 286,840.80/x
  3. Step 3: Cross multiply
    411,256.80x = 615,502.80 × 286,840.80
  4. Step 4: Simplify right side
    411,256.80x = 176,551,315,554.24
  5. Step 5: Solve for x
    x = 176,551,315,554.24/411,256.80
  6. Step 6: Final answer
    x = 429,297.01

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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.