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Finding the Fourth Proportional to 530,957.40, 732,712.76 and 289,242.88

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Solution

The fourth proportional to 530,957.40, 732,712.76 and 289,242.88 is: 399,150.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,957.40 : 732,712.76 = 289,242.88 : x
  2. Step 2: Convert to fraction form
    530,957.40/732,712.76 = 289,242.88/x
  3. Step 3: Cross multiply
    530,957.40x = 732,712.76 × 289,242.88
  4. Step 4: Simplify right side
    530,957.40x = 211,931,948,915.15
  5. Step 5: Solve for x
    x = 211,931,948,915.15/530,957.40
  6. Step 6: Final answer
    x = 399,150.57

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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.