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Finding the Fourth Proportional to 616,186.40, 924,862.80 and 379,990.40

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Solution

The fourth proportional to 616,186.40, 924,862.80 and 379,990.40 is: 570,345.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,186.40 : 924,862.80 = 379,990.40 : x
  2. Step 2: Convert to fraction form
    616,186.40/924,862.80 = 379,990.40/x
  3. Step 3: Cross multiply
    616,186.40x = 924,862.80 × 379,990.40
  4. Step 4: Simplify right side
    616,186.40x = 351,438,985,317.12
  5. Step 5: Solve for x
    x = 351,438,985,317.12/616,186.40
  6. Step 6: Final answer
    x = 570,345.25

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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.