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Finding the Fourth Proportional to 257,534.10, 386,301.15 and 243,018.90

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Solution

The fourth proportional to 257,534.10, 386,301.15 and 243,018.90 is: 364,528.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,534.10 : 386,301.15 = 243,018.90 : x
  2. Step 2: Convert to fraction form
    257,534.10/386,301.15 = 243,018.90/x
  3. Step 3: Cross multiply
    257,534.10x = 386,301.15 × 243,018.90
  4. Step 4: Simplify right side
    257,534.10x = 93,878,480,541.74
  5. Step 5: Solve for x
    x = 93,878,480,541.74/257,534.10
  6. Step 6: Final answer
    x = 364,528.35

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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.