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Finding the Fourth Proportional to 515,179.86, 710,127.05 and 406,106.46

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Solution

The fourth proportional to 515,179.86, 710,127.05 and 406,106.46 is: 559,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,179.86 : 710,127.05 = 406,106.46 : x
  2. Step 2: Convert to fraction form
    515,179.86/710,127.05 = 406,106.46/x
  3. Step 3: Cross multiply
    515,179.86x = 710,127.05 × 406,106.46
  4. Step 4: Simplify right side
    515,179.86x = 288,387,182,425.74
  5. Step 5: Solve for x
    x = 288,387,182,425.74/515,179.86
  6. Step 6: Final answer
    x = 559,779.61

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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.