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Finding the Fourth Proportional to 153,459.47, 211,784.69 and 93,032.66

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Solution

The fourth proportional to 153,459.47, 211,784.69 and 93,032.66 is: 128,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,459.47 : 211,784.69 = 93,032.66 : x
  2. Step 2: Convert to fraction form
    153,459.47/211,784.69 = 93,032.66/x
  3. Step 3: Cross multiply
    153,459.47x = 211,784.69 × 93,032.66
  4. Step 4: Simplify right side
    153,459.47x = 19,702,893,820.02
  5. Step 5: Solve for x
    x = 19,702,893,820.02/153,459.47
  6. Step 6: Final answer
    x = 128,391.51

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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.