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Finding the Fourth Proportional to 619,873.10, 929,809.65 and 514,897.10

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Solution

The fourth proportional to 619,873.10, 929,809.65 and 514,897.10 is: 772,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,873.10 : 929,809.65 = 514,897.10 : x
  2. Step 2: Convert to fraction form
    619,873.10/929,809.65 = 514,897.10/x
  3. Step 3: Cross multiply
    619,873.10x = 929,809.65 × 514,897.10
  4. Step 4: Simplify right side
    619,873.10x = 478,756,292,337.02
  5. Step 5: Solve for x
    x = 478,756,292,337.02/619,873.10
  6. Step 6: Final answer
    x = 772,345.65

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Double scale
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Similar ratio
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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.