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Finding the Fourth Proportional to 706,145.85, 974,498.04 and 400,253.40

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Solution

The fourth proportional to 706,145.85, 974,498.04 and 400,253.40 is: 552,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,145.85 : 974,498.04 = 400,253.40 : x
  2. Step 2: Convert to fraction form
    706,145.85/974,498.04 = 400,253.40/x
  3. Step 3: Cross multiply
    706,145.85x = 974,498.04 × 400,253.40
  4. Step 4: Simplify right side
    706,145.85x = 390,046,153,803.34
  5. Step 5: Solve for x
    x = 390,046,153,803.34/706,145.85
  6. Step 6: Final answer
    x = 552,359.20

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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.