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Finding the Fourth Proportional to 577,223.40, 865,835.10 and 470,935.20

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Solution

The fourth proportional to 577,223.40, 865,835.10 and 470,935.20 is: 706,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,223.40 : 865,835.10 = 470,935.20 : x
  2. Step 2: Convert to fraction form
    577,223.40/865,835.10 = 470,935.20/x
  3. Step 3: Cross multiply
    577,223.40x = 865,835.10 × 470,935.20
  4. Step 4: Simplify right side
    577,223.40x = 407,752,225,985.52
  5. Step 5: Solve for x
    x = 407,752,225,985.52/577,223.40
  6. Step 6: Final answer
    x = 706,402.80

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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.