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Finding the Fourth Proportional to 577,875.30, 865,123.35 and 411,987.30

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Solution

The fourth proportional to 577,875.30, 865,123.35 and 411,987.30 is: 616,776.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,875.30 : 865,123.35 = 411,987.30 : x
  2. Step 2: Convert to fraction form
    577,875.30/865,123.35 = 411,987.30/x
  3. Step 3: Cross multiply
    577,875.30x = 865,123.35 × 411,987.30
  4. Step 4: Simplify right side
    577,875.30x = 356,419,833,133.46
  5. Step 5: Solve for x
    x = 356,419,833,133.46/577,875.30
  6. Step 6: Final answer
    x = 616,776.38

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Double scale
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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.